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Aquarium Guides
Practical guides covering the parts of fishkeeping that actually decide whether a tank succeeds: cycling, stocking, water chemistry and disease. Written to be read once and applied, not to fill a page.
Start here
If you are setting up your first tank, read these three in order: Beginner setup → How to cycle a tank → Stocking guide. That covers roughly 90% of what goes wrong in a first aquarium.
All guides
How to Cycle a Fish Tank
Complete fishless cycling guide: how long it takes, what to dose, what to test, and the exact numbers that mea…
The Aquarium Nitrogen Cycle Explained (With Numbers)What the nitrogen cycle is, what ammonia, nitrite and nitrate actually do to fish, safe levels for each, and h…
How Many Fish Can I Put in My Tank? A Practical Stocking GuideWhy the inch-per-gallon rule fails, what actually limits stocking, and how to plan a tank by bioload, footprin…
Freshwater Aquarium Setup for BeginnersEverything needed to set up your first freshwater aquarium: what to buy, what size to start with, how to set i…
Fish That Do Not Need a Heater8 freshwater species that thrive at room temperature without an aquarium heater, with exact temperature ranges…
Best Algae Eaters ComparedWhich algae eater actually works for which algae type. Honest comparison of otocinclus, amano shrimp, nerite s…
Nano Tank Starter Guide19 species suitable for 5 and 10 gallon aquariums, with realistic stocking plans, why small tanks are harder t…
Fish Compatibility BasicsHow to tell whether two aquarium fish can live together: water parameters, adult size ratio, temperament and s…
Community Tank PlanningHow to plan a freshwater community tank from scratch: choosing a theme, filling swimming zones, sizing groups …
How to Introduce New Fish to Your Tank SafelyQuarantine, acclimation and introduction: the exact process for adding new fish without crashing your cycle, i…
Signs of Fish Stress and Common DiseasesHow to read fish behaviour and spot problems early: symptom-by-symptom diagnosis table for ich, fin rot, bloat…
Breeding Freshwater Fish for BeginnersWhich species breed easily, how livebearers differ from egg layers, how to set up a breeding and grow-out tank…