Hey guys so I'm new to rainbowfish, after watching a video with Gary Lange I fell hard for these guys. I am currently in the process of moving tanks around at my place to get a bigger tank, minimum of 75g. I want a few different schools of different species. I know this is a kind of broad question but with overfiltration how many rainbows could I fit comfortably in a 75g? Looking forward to learning more and hopefully soon buying some of these beauties thanks guys and girls
Hey, I'm no expert but generally speaking it depends on which species of rainbows and how often you want to change the water which boils down to how much time you want to spend tending to the tank which as time goes on could also change. You could in theory keep a lot of fish in a 75g but its always a lot easier to maintain an under stocked tank. If its a planted tank then that will help you keep the nitrates lower and help oxygenate the water which will make your life easier. If you want to keep a few different large species maybe 3 different species 6 fish each for a total of 18 could be an ok start for a 75g.
Welcome guys. ☺ We have a sister group on Facebook Rainbowfish Live that is very active, where this kind of conversation takes place pretty much daily. Jordan, you're right on with your advice. 18-24 max fish in a 75g well filtered, planted tank with regular weekly or biweekly water changes of 50% or more.