http://www.arofanatics.com/forums/sh...=447400&page=4
Bro you can roughly gage .. My last time tank only 5x2x2 ... Yours is around 2 times my tank ... 15 might look a bit cramp but nice sure ... Bioload wise don't worry too much ....
8 reds also must tan .... 10 reds also must tan , as well go for 15 pcs