Aquarium guides
Setup, cycling, water, diseases and plants explained step by step, with tables and tips so your fish live long, healthy lives.
Complete aquarium guide →Aquariums
How to set up a coldwater aquarium: tank size, filter, plants, fish A guide to coldwater tanks: goldfish (and why bowls don't work), white cloud minnows, medaka and paradise fish, temperatures, tank sizes, filtration and tough plants. Shrimp tank guide: Neocaridina vs Caridina, water, breeding, molting How to set up a freshwater shrimp tank: Neocaridina or Caridina, water parameters, a mature tank, drip acclimation, safe tankmates, feeding, breeding and molting issues. How Much Does an Aquarium Cost? Setup Budget and Real Monthly Costs What a fish tank really costs to set up and run: budgets for nano, 15, 30 and 55+ gallon tanks, monthly electricity, food and conditioner, and where to save safely. How Many Fish Can You Put in a Tank? Stocking Done Right Why the one-inch-per-gallon rule fails and how to work out how many fish your tank can hold: adult size, schooling needs, territory, filtration and real examples. How to Set Up a Fish Tank Step by Step: From Stand to First Fish Step-by-step guide to setting up a fish tank: location, stand, substrate, hardscape, plants, filling, equipment, cycling and your first fish, plus a checklist. How to Move a Fish Tank Without Losing Fish or Your Cycle How to move an aquarium step by step: keep the filter bacteria alive, transport fish and plants, empty the tank completely, set it back up and watch for a mini-cycle. How to Set Up a Nano Tank: Equipment, Stocking and Maintenance How to set up a nano tank of 3 to 8 gallons: pros and cons, stability, which species fit and which do not, the equipment you need and weekly maintenance. First Aquarium for Beginners: Tank Size, Equipment and Easy Fish Everything for your first aquarium: what size to pick, budget, essential equipment, easy fish and plants, a plan for the first weeks and the classic beginner mistakes. Filters & filtration
Heaters & temperature
LED lighting
CO₂, fertilizers & aquascaping
Planted Tank for Beginners: Light, Substrate, Fertilizer and CO2 How to start a planted aquarium: lighting, substrate, fertilizers, whether you need CO2, easy plants, planting and trimming, and keeping the balance that stops algae. Aquarium Algae: Types, Causes and How to Get Rid of Them How to identify aquarium algae (green spot, hair, black beard, diatoms, cyanobacteria, green water) and get rid of it by fixing light and nutrient balance first. CO2 in a Planted Tank: When You Need It and How to Dial It In CO2 guide for planted tanks: when you need it, pressurized vs DIY yeast vs liquid carbon, diffusers, drop checkers, bubbles per second and keeping your fish safe. Water care & maintenance
Cloudy Aquarium Water: White, Green or Brown and How to Clear It Why aquarium water turns cloudy (white, green, brown or gray), what each color means and how to clear it without drastic water changes that make things worse. Aquarium Water Changes: How Much, How Often and How To How much aquarium water to change and how often, step by step: matching temperature, using water conditioner, gravel vacuuming and the mistakes to avoid. Pest Snails in Your Aquarium: Why They Appear and How to Control Them How to control pest snails in a fish tank: ramshorn, bladder and Malaysian trumpet snails, why they explode, traps, assassin snails and what to avoid with shrimp. Aquarium Cycling: The Nitrogen Cycle, Testing and When to Add Fish How to cycle an aquarium: the nitrogen cycle, fishless vs fish-in cycling, ammonia sources, bottled bacteria, a weekly testing schedule and signs the cycle is done. Why Are My Fish Dying? Stress Signs, Causes and Fixes Why aquarium fish die: how to spot stress (faded colors, clamped fins, rapid breathing), the most common causes and what to do step by step to stop the losses. Ammonia, Nitrite and Nitrate in Aquariums: Safe Levels and Fixes Ammonia, nitrite and nitrate explained: why they are toxic, safe levels, what causes spikes and how to lower them without killing your filter bacteria. Aquarium Water Parameters: Ideal Ranges and How to Test Ammonia, nitrite, nitrate, pH, KH, GH, temperature and TDS: what each aquarium water parameter means, the ideal ranges and how to test them accurately. Cleaner fish for aquariums: the clean-up crew myth explained What corydoras, plecos, otocinclus, Amano shrimp and nerite snails really do, why they need their own food, and why no clean-up crew replaces tank maintenance. How to Raise or Lower Aquarium pH Safely (Plus KH and GH) Aquarium pH, KH and GH explained: why stability matters more than the number, and how to raise or lower pH naturally and safely to suit your fish. Fish food
How Much and How Often to Feed Aquarium Fish How much food to give your fish and how often: the 2-3 minute rule, feeding frequency by fish type, fasting days, bottom feeders, fry, vacations and signs of overfeeding. Leaving Your Fish Tank on Vacation: Food, Lights and Heat How to leave your aquarium when you go on vacation: how long fish can go without food, automatic feeders, light timers, heat waves and preparing a tank sitter. Substrate & decor
Guides
How to Acclimate Fish: Floating, Drip Method and Quarantine How to acclimate new fish step by step: getting them home, the floating method, drip acclimation for shrimp and sensitive species, quarantine and common mistakes. How to Breed Guppies: Ratio, Gestation, Fry Care and Surplus Fish How to breed guppies and other livebearers: male to female ratio, the roughly 28-day gestation, birth, fry cover, fry food, growth and what to do with surplus fish. Aquarium Fish Diseases: Symptoms, Causes and What to Do How to recognize the most common aquarium fish diseases (ich, fin rot, fungus, velvet, dropsy, swim bladder) and the steps to take before reaching for medication. Ich (White Spot Disease) in Fish: Symptoms, Life Cycle, Treatment What ich is, how to spot it, why its life cycle matters and how to treat it with gradual heat, medication and care with salt, scaleless fish, plants and invertebrates.