Are 2 Koralia 1's good enough on a 75 gallon tank? One on each side and maybe later on adding a Koralia 2 in the middle of the back for even more movement. Is that too much or not enough? Shoud I up the number on each Koralia or is that ok?
Ooo my bad...I read it wrong
Ooo well I purchased the two 3s already but both of them are going on the sides so I'll get a 4 to put in the middle of the back