The Aquarist's Edge

Your aquarium filter is a living habitat where biofilm, oxygen, and water flow decide how stable (or fragile) your freshwater tank becomes. In this episode of The Aquarist’s Edge, Art breaks down what actually happens inside sponge filters, canister filters, and hang-on-back filters, and why upgrading a filter can sometimes make a tank worse if the habitat shifts. You’ll learn how filter flow rate, surface agitation, and filter media choices shape your biological filtration, water clarity, and long-term consistency. 💬 Join the conversation: Have you ever upgraded a filter and your tank got worse? Tell us what changed. SEO keyword...

In this episode of The Aquarist’s Edge, Art breaks down 10 proven ways to make your freshwater aquarium healthier. This episode will help you stabilise your tank and prevent problems before they start. Expect practical fishkeeping advice, clear science, and realistic routines you can follow even when life gets busy. You’ll learn how to improve freshwater fish health, protect your biological filtration, manage ammonia, nitrite and nitrate, and create a healthier aquarium environment with less stress and more consistency. **LISTENER NOTE** - This is the first episode with no music in the background. Let me know if you prefer it t...

In this episode of The Aquarist’s Edge, Art shares 10 proven ways to make your freshwater aquarium healthier. If you’re dealing with cloudy water, algae flare-ups, stressed fish, or “mystery” health issues, this episode will help you stabilise your tank and prevent problems before they start - practical fishkeeping advice, clear science, and realistic routines you can follow even when life gets busy. You’ll learn how to improve freshwater fish health, protect your biological filtration, manage ammonia, nitrite and nitrate, and create a healthier aquarium environment with less stress and more consistency. 🎵 Music: "Hall Light - Instrumental" - Victor Lundberg...

Many aquarists don’t leave the hobby at the beginning of their aquarium journey. They leave during the stage when their aquarium suddenly becomes difficult to manage. Algae outbreaks, plant melt, unstable water conditions, and constant adjustments can make even a promising tank feel frustrating and discouraging. In this episode Art explores the phase where many aquarists consider giving up. He shares why this stage happens, what is actually going on inside the aquarium ecosystem, and how hobbyists can move through this difficult period toward a more stable and rewarding aquarium. Topics covered include: The difference between cycled tanks and ma...

Shy fish can turn a beautiful freshwater aquarium into an “invisible fish” tank but most hiding behaviour has clear, fixable causes. In this episode of The Aquarist’s Edge, Art breaks down why fish stay tucked away and how to coax them into the open without stress using smarter aquascaping, gentler lighting, confidence-building feeding routines, and a quick social “bully check.” Whether you keep tetras, rasboras, corydoras, or other community fish, this episode will leave you with a practical plan to help your fish feel safe and behave naturally.   🎵 Music: "Feels Like That (Instrumental)" - Victor Lundberg (Epidemic Sound - https://www.ep...

Do you want a freshwater aquarium that stands out without keeping difficult fish? In this episode of The Aquarist’s Edge, Art explores unusual but easy-to-care-for freshwater aquarium fish that thrive in normal home setups. You’ll learn the aquarist “keeper moves” that make oddball fish feel effortless: tank setup tips, feeding strategies, compatibility advice, and the simple tweaks that stop shy fish from disappearing. If you’re building a planted community tank, a nano setup, or a river-rock oddball aquarium, this episode will help you choose fish that are both unique and beginner-friendly, while still rewarding you with incredible behaviour...

Art explores a question many hobbyists quietly relate to: why do so many home aquarists seem to be neurodivergent, including people with ADHD traits, autistic traits, anxiety traits, and strong systems-thinking? Is this reality or simply perception? The episode looks at the science-meets-hobby reasons aquariums can feel uniquely regulating: predictable routines, measurable cause-and-effect, soothing sensory input, and the deep satisfaction of observation and pattern recognition. You’ll also hear practical, beginner-friendly ways to build an aquarium routine that works with your brain, not against it; covering overwhelm, perfectionism, impulsive upgrades, and how to simplify maintenance so your tank stays stable ev...

Tiger barbs are hardy, colourful, and endlessly entertaining but they’re also one of the most commonly mis-stocked freshwater fish, which is why fin-nipping and “random aggression” show up so often. In this episode of The Aquarist’s Edge, Art breaks down a complete tiger barb care guide: the best tank size in litres, the ideal schooling group size, the most effective ways to reduce aggression, and how to choose tank mates that won’t get harassed. You’ll also learn practical feeding strategies for health and colour, how to set up your aquascape with sight breaks and swimming lanes, and ways to...

In this episode of The Aquarist’s Edge, Art explores why the freshwater aquarium hobby needs you. It's not just the experts, not just the big creators, but everyday aquarists who choose patience, good husbandry, and kindness with beginners. You’ll learn how your decisions around aquarium cycling, stocking, quarantine, water testing, and maintenance routines ripple outward to shape fish welfare, local fishkeeping culture, and even what aquarium shops stock. We also unpack how to help new hobbyists without gatekeeping, how to spot and avoid harmful trends, and how to “vote with your wallet” to support ethical fishkeeping. Whether you keep a si...

Algae in freshwater aquariums isn't always a nuisance. It’s a clear signal about lighting, nutrients, plant health, organics, and overall tank stability. In this episode of The Aquarist’s Edge, Art flips the script on aquarium algae and shows you how to “read” what your tank is telling you, identify common algae types (green hair algae, black beard algae, diatoms, green film algae, and cyanobacteria), and reduce algae naturally without wrecking your aquarium balance. You’ll walk away with practical steps to control algae long-term, support healthy plant growth, and keep your aquarium looking great with realistic maintenance. 🎵 Music: "Breathe In Br...

Art breaks down the real differences between Endler’s livebearers and guppies, going far beyond size and colour. You’ll learn how species genetics, natural behaviour, and evolutionary history shape their health, activity levels, and breeding patterns in the aquarium. You'll hear about the science behind Endlers’ constant foraging behaviour, why guppies and Endlers hybridise so easily, and how tank design, mineral content, temperature, and feeding strategies directly affect long-term success. Whether you’re keeping Endlers, guppies, or both, this episode provides practical, experience-based advice to help you build stable, thriving livebearer tanks.   ⭐ Enjoying the show? Leave a review and help other...

This episode exposes one of the most dangerous myths in guppy keeping: that you need perfect water parameters to keep guppies alive. Discover why constant tweaking of pH, hardness, and temperature quietly kills guppies, and learn what these colourful livebearers actually need: stable, mineral-rich water and a calm, consistent routine. Art  breaks down practical guppy care, soft-water strategies, and more. Whether you’re losing guppies in a new setup or your fancy strains just don’t last, this exploration of guppy water parameters, hard water livebearers, and stable aquarium maintenance will help you turn things around.

This episode explores what your freshwater aquarium is really doing while you sleep. From plant respiration and fish “sleep” behaviour to oxygen levels and filter bacteria, learn more about the hidden night shift inside your tank. Learn how to create gentle lighting transitions, set up smart night-time aeration, and design an aquascape that keeps your fish calm after dark. Two troubleshooting segments tackle common night-time problems: fish panicking when lights turn on or off, and oxygen dips that leave fish gasping at the surface. This episode is perfect for beginner and intermediate freshwater keepers who want to understand their tanks as 2...

Art breaks down the top five New Year resolutions that truly make a difference for freshwater aquarists - not onlyt for your fish, but for your long-term success and enjoyment of the hobby. From building stable aquarium ecosystems to simplifying maintenance routines and improving feeding habits, this episode focuses on practical changes that lead to healthier fish and less stress. Whether you’re a beginner or an experienced fishkeeper feeling overwhelmed, these aquarium resolutions will help you create more balance, consistency, and confidence in your tanks throughout the year. 👉 Leave a review and share your experience with these resolutions 🎵 Music: "Swaying"...

In this episode of The Aquarist’s Edge, Art unpacks the subtle ways your freshwater aquarium can mislead you. Crystal-clear water, active fish, lush plants, and “good” test results can all hide underlying stress, unstable chemistry, and long-term problems. Learn how to read the real signals in your tank: from fish behaviour and flow patterns to plant growth, algae types, temperature stability, and social dynamics. You’ll learn how to think beyond appearances, understand the biology and chemistry happening behind the glass, and build simple habits that stop your tank from “lying” to you for long. Whether you’re cycling your first com...

In this episode of The Aquarist’s Edge, Art unpacks the mindset behind the title “Don’t Assume You Know” and expose the hidden mistakes that quietly ruin freshwater aquariums. From so-called “beginner fish” and misunderstood nitrogen cycles to tap water assumptions, equipment myths, and misread fish behaviour,  learn more about the science and how to stop guessing and start understanding your tank. You’ll learn how to read your fish and plants, how to interpret your water test results properly, and how to build habits that keep your aquarium stable, healthy, and thriving long-term. Whether you’re a new aquarist or you’v...

This episode takes a deep but practical look at overfiltering in freshwater aquariums and explains why more filtration isn’t always better for fish health or long-term stability. Many hobbyists unknowingly create stressed, fragile systems by using excessive flow, oversized filters, or overly aggressive mechanical filtration. You’ll learn how filtration affects fish behaviour, beneficial bacteria, and planted tanks, along with clear signs your aquarium may be overfiltered and how to fix it without sacrificing water quality. If your tank looks clean but never feels stable, this episode will help you rethink filtration from the fish’s point of view. 👉 Leave a r...

In this Christmas holiday special of The Aquarist’s Edge, Art shares calm, practical Christmas and holiday aquarium rituals to keep your freshwater fish tanks thriving while life gets busy. From intentional end-of-year water changes and equipment check-ups to quiet observation sessions, you’ll learn how to turn maintenance into meaningful, repeatable habits. The episode also walks through a simple holiday game plan for feeding, travel, and maintenance.  Whether you keep planted community tanks, nano species, or larger freshwater setups, this episode will help you reset, reflect, and plan realistic aquarium goals for the year ahead without overwhelm. If you enjoy...

In this episode Art unpacks how to build a low-tech planted tank that genuinely stays low-maintenance. From choosing the right tank size, filter, and lighting, to selecting easy aquarium plants that thrive without CO₂, you’ll learn how to design a balanced freshwater ecosystem instead of an algae farm. We also walk through a step-by-step setup, a realistic weekly maintenance routine, and two deep troubleshooting segments on algae, plant melt, cloudy water, and fish stress. Whether you’re new to planted aquariums or you’ve struggled with so-called “easy” setups before, this episode is packed with practical, science-based advice you can actually...

In this episode Art takes a close look at the Siamese Algae Eater (Crossocheilus siamensis), one of the most misunderstood freshwater algae eaters in the hobby. Learn how to identify true SAEs vs common lookalikes, the ideal tank size, water parameters, and aquascaping for these active fish, and what they really eat once they discover pellets and flakes.  Whether you keep planted tanks or just want reliable algae control, this episode is packed with practical Siamese Algae Eater care tips, behaviour insights, and stocking advice to help you make smart choices. 🎵 Music: "Secret Garden" - J.F. Gloss (Epidemic Sound - htt...

In this episode of The Aquarist’s Edge, Arthur shares 10 easy, practical tips to make your freshwater aquarium healthier and more stable. From understanding the nitrogen cycle and preventing overstocking, to using live plants, smarter feeding habits, and creating consistent maintenance routines, you’ll learn exactly how to build a tank where fish truly thrive.  Whether you’re just starting with a small community tank or refining a larger setup, this episode is packed with actionable freshwater aquarium tips to improve water quality, reduce stress, and prevent disease. Mentioned in this episode: Why Fasting Your Fish Improves Their Health  🎵 Music: "Last To Lea...

In this episode of The Aquarist’s Edge, Art explores the real difference between Neon Tetras and Cardinal Tetras? From their natural habitats in the Amazon to their unique water chemistry, feeding habits, and breeding challenges, this episode gives you everything you need to know to care for these iconic species successfully. Learn how to identify each fish, understand their distinct needs, and create an environment where both can thrive. Whether you’re struggling to keep Cardinals healthy or curious about mixing the two in one tank, this episode delivers science-backed insights and real-world aquarium advice. 💬 Leave a review and tell us...

Art breaks down the 10 most common freshwater aquarium setup mistakes and how to avoid them for good. Whether you’re cycling your first tank or perfecting your aquascape, this episode gives you the scientific background, real-world experience, and practical guidance every aquarist needs. Learn how to prevent new tank syndrome, balance your filtration, master temperature control, and design a tank that thrives long-term - all while keeping your fish healthy, calm, and colourful. This episode is your complete guide to setting up a thriving freshwater aquarium ecosystem that’s beautiful, stable, and stress-free. 👉 Leave a review and share your setup stories...

In Part 2 of The Secret Language of Fish, Art continues exploring the quiet dialogue between aquarist and aquarium. Learn how to build trust with your fish, interpret stress and curiosity, and create an environment that encourages confident, natural behaviour. From establishing consistent routines to reading subtle emotional cues, this episode teaches you how to “speak back to the water.” ⭐ What You’ll Discover: • How consistency and calm movement build fish trust • The role of environment and lighting in fish communication • Recognising stress, fear, and curiosity in freshwater species • Turning feeding and maintenance into meaningful interaction • Why observation is the aquarist’s most powerful lang...

In this first part of The Secret Language of Fish series, Art explores one of the most fascinating mysteries for home aquarium keepers: how fish recognise and communicate with their keepers. Discover the science behind memory and perception in aquarium fish, learn to decode subtle body language, and understand how your daily rhythm shapes the way your fish respond to you. Whether you keep angelfish, bettas, or goldfish, this episode will help you see your aquarium in a whole new light; as a world of quiet signals and intelligent responses. ⭐ Topics include: • The myth of the “three-second goldfish” • How fish use sight...

From lowering blood pressure and improving sleep to easing anxiety and nurturing emotional balance, this episode investigates the research and shared experiences that show how aquariums affect the body, mind, and spirit. Drawing on studies from the University of Plymouth, Purdue University, and experts like Diana Walstad and Takashi Amano, Art reveals why the simple act of keeping fish can bring profound peace and wellness to your life. Whether you’re a seasoned aquarist or just starting your first tank, this episode offers practical insight, reflective storytelling, and real scientific evidence that will deepen your appreciation of the hobby and yo...

Art explores the fascinating world of freshwater aquarium snails. Are they helpful allies or invasive pests? The truth lies somewhere in between. From Malaysian trumpet snails and ramshorns to nerites and mystery snails, this episode explores the most common species aquarists encounter, their benefits to aquarium ecosystems, and the potential problems they can cause. You’ll learn practical snail control methods, prevention strategies, and even how to care for snails as intentional pets. Whether you’re battling an unexpected snail invasion or considering nerite snails for algae control, this episode provides practical, science-backed advice to help you manage your freshwater tank...

In this episode of The Aquarist’s Edge, we examine the world of planaria in shrimp tanks - what they are, why they appear, and how to keep them under control. If you’ve ever spotted these flatworms gliding across your aquarium glass and worried about the safety of your shrimp colony, this episode will give you the clarity and tools you need. From identifying planaria versus harmless detritus worms, to understanding how they impact baby shrimp, to proven natural and chemical control methods, this episode is packed with expert guidance and practical tips. You’ll also learn long-term prevention strate...

We take a look at how to set up the perfect guppy tank. From the ideal tank size to the right temperature, pH, and water hardness, you’ll learn everything you need to create a stable environment where guppies thrive. Whether you’re a beginner struggling with constant guppy losses or an experienced aquarist looking to refine your setup, this episode is packed with scientific explanations, practical home aquarist tips and advice to help you succeed. Click here for more guppy care episode: Guppy Care Playlist on YouTube (Aquarist's Edge episodes) Music: "Just One More Day" - Kikoru (Epidemic Sound - htt...

“Tannins Explained” takes you into the science and beauty of blackwater aquariums. In this episode of The Aquarist’s Edge, Art explores what tannins are, where they come from, how they influence water chemistry, and why so many softwater fish thrive in tannin-rich environments. From driftwood and Indian almond leaves to peat and alder cones, learn exactly how tannins transform your tank and how to use them safely. Whether you’re curious about why your driftwood stained your tank, how tannins lower pH, or which fish species benefit most from blackwater setups, this episode is packed with clear explanations, troubleshooting advice...

Art breaks down everything you need to know about setting up and maintaining a Betta sorority tank; with a focus on real-world success and scientific accuracy. Whether you're planning your first Betta community or you've tried before and struggled, this episode provides a guide into female Betta behavior, tank setup requirements, and the critical do’s and don’ts that make or break a sorority. From territorial psychology to line-of-sight aquascaping, we explain why most Betta sororities fail and how yours can succeed. You’ll also learn how to troubleshoot aggression, interpret tank dynamics, and know when to pull the plug o...

Welcome to this week’s edition of The Aquarist’s Edge, your trusted source for freshwater aquarium news and insights. Join Arthur Preston as we explore ten fascinating stories that connect science, conservation, and the home aquarium hobby. 🔍 In This Episode: 🐟 Bumblebee catfish caught on camera climbing waterfalls in Brazil 👁️ Blind cavefish that have survived without light for over 11 million years 🐠 The giants of the Mekong River are shrinking fast 🌱 The IAPLC 2025 Finals — the world’s biggest aquascaping event 🎣 A fresh look at Cupid Cichlids and their family tree 🌿 Nutmeg oil as a safe way to calm fish during treatment ❄️ Breeding secrets of the cold-water...

In this episode of The Aquarist’s Edge, Art explores one of the most debated questions in freshwater fishkeeping: live plants vs. fake plants. Should you choose natural greenery that supports your aquarium’s ecosystem, or go with artificial plants for convenience and simplicity? We break down the pros and cons of each option, from aesthetics and maintenance to water chemistry and fish health. Learn why live plants help reduce nitrates, improve oxygen levels, and control algae. Discover when fake plants might actually be the better choice. Plus, we troubleshoot common problems like plant melt, algae overgrowth, and cleaning artificial plan...

In this episode we tackle the six most common, and preventable, mistakes that lead to fish deaths in freshwater aquariums. From skipping the nitrogen cycle to trusting clear water without testing, this episode delivers the science and strategy every beginner aquarist needs. You’ll learn: Why fish die suddenly in new tanks, How ammonia poisoning works and how to stop it, Why small tanks aren’t easier (and often deadlier), How to build habits that support long-term fish health. Whether you're setting up your first aquarium or fixing mistakes from your last one, this episode is a must-listen for hobbyists who...

In this episode of The Aquarist’s Edge, Art explores the fascinating world of heater-free and filterless aquariums. Can fish really thrive without equipment? Yes! When you understand how to balance plants, substrate, and stocking levels, your tank can become a self-sustaining ecosystem. You’ll learn the science behind natural filtration, temperature tolerance in fish, and how to set up a low-tech aquarium that works with nature instead of against it. We’ll cover planting strategies, substrate choices and manual maintenance routines.  Whether you’re curious about natural aquariums, low-tech fish tanks, or creating a sustainable setup without expensive equipment, this epis...

In today’s episode of The Aquarist’s Edge, we unpack the critical role of nutrients in freshwater aquariums: from how they fuel plant growth to how they trigger algae when mismanaged. Whether you're dosing fertilizers, battling green water, or simply wondering if your plants are starving, this episode has the answers. We explore the full nutrient cycle, explain how feeding affects water chemistry, and provide expert tips on managing nitrate, phosphate, and other key elements. We clarify what "dosing" actually means and how to do it safely. ✅ Learn to balance nutrients for a healthy ecosystem ✅ Diagnose common plant deficiencies ✅ Discover h...

This week's Aquarium News shares stories of how science and fishkeeping collide in fascinating ways. Discover why deep-sea fish are rewriting our understanding of the carbon cycle, how new muscle research is changing what we thought we knew about the coelacanth, and meet two newly described snail-crushing cichlids from Lake Victoria. Also in this episode: What lanternfish fossils tell us about declining ocean oxygen How to give your shrimp and snails the care they truly deserve Practical tips for water chemistry, species-specific habitats, and sustainability in your fish room Whether you're a casual keeper or a passionate aquarist, this episode...

In this episode of The Aquarist’s Edge, we explore the wild origins of guppies and how their native habitats in South America and the Caribbean should inform the way we care for them in aquariums. From the evolutionary pressures that shaped guppy behaviour to the environmental conditions they evolved in, this episode offers a naturalistic approach to guppy keeping rooted in science and ecology. 🌿 Explore guppy behaviour in the wild 📘 Discover the impact of selective breeding 💡 Build tanks that support natural guppy instincts

The first of a regular news update featuring headlines and reports about the freshwater aquarium hobby from around the globe.  In this episode: 🧬 Hear about the discovery of a ghostlike electric knifefish in Brazil and a blind cave-dwelling loach in Vietnam. 🐟 Dive into the spotlight species of the week – the elegant and often-overlooked halfbeak. 👁️ Discover new research into schooling behaviour and how fish avoid bumping into each other. 🧠 Learn how goldfish remember, cichlids parent, and archerfish recognise human faces. 🌍 Understand the growing threat to Africa’s freshwater fish species and how climate change is reshaping aquatic ecosystems. Perfect for home aquarists, hobbyist re...

Do you think you know the Nitrogen Cycle? Perhaps there's more to it... In today’s episode of The Aquarist’s Edge, we unpack the full complexity of the nitrogen cycle — going far beyond the basics to explore the real science that powers your aquarium's biological stability.  Learn how nitrifying bacteria actually work, why oxygen levels and substrate depth affect your biofiltration, and how nature handles nitrogen differently than most aquariums. We also explore why “cycled” doesn’t always mean “stable,” and what really causes crashes in systems that seem fine on the surface. 🎧 In this episode: The real microbes behind your biofilte...