Who Gives A Fish Forums

If you're tight on space, a 75g is the bare minimum, but make sure it's wide, not tall. Discus prefer horizontal swimming space. My mate tried a tall 65g, and his fish were always stressed. Switched to a standard 75g, added more driftwood, and boom, problem solved. Oh, and don't skimp on the heater ...

A 55g is pushing it for 6 adults. They need space to establish territories and reduce stress. I'd recommend at least 75g, preferably 100g if you can swing it. My group of 8 thrives in a 120g with weekly 50% water changes, T5 lighting, and a mix of live plants like Amazon swords. Overcrowding leads ...