TankMate Guides
Aquarium guides for every tank.
Free, practical setup and care guides — whatever you keep, and whatever problem you're chasing.
Setup guides by tank type
Start here — pick your tank.
🪸 Reef / SaltwaterCorals, cycling, and full reef chemistry, step by step.
🐟 Saltwater Fish-OnlyMarine fish without the coral chemistry — the easier way into saltwater.
🐠 Freshwater CommunityThe beginner-friendly classic: gear, cycling, and the best first fish.
🎨 African CichlidRift Lake color and personality, and the water they need.
🌿 Planted / AquascapeUnderwater gardening — light, substrate, CO₂, and layout.
🦐 Shrimp / NanoDwarf shrimp and the TDS/GH precision they quietly demand.
🦎 AxolotlCold-water amphibian care, and the myths that get them killed.
Reef care & problem-solving
Fix the issues every reefer runs into.
How to Cycle a New Saltwater TankThe nitrogen cycle step by step.
Ideal Reef Tank Water ParametersTarget ranges for every key parameter.
How to Lower NitratesSeven reliable ways to bring nitrate down.
Why Is My Coral Bleaching?Causes and how to turn it around.
Why Alkalinity Won't Stay StableStop the swings that burn coral tips.
How to Get Rid of DinoflagellatesBeat the pest that loves clean water.
Reef Tank Algae Types & FixesIdentify and beat each kind of algae.
How TankMate works
The AI features behind the app.