Ive read that 3 mabye 4 fish in a 29 gallon reef??? Does the sump count when calculating the # of fish in a tank?? Or is it due to the amount of space? Im asking cause I have 5 fish that I REALLY like for my tank and they're all small (3-4" as adults). Ive got a 20 gallon sump/fuge so if its more a bio load issue than a space issue I would think I could have an extra fish or two?? Thanks for any input.