I'm curious, since most of these nice show tanks you see people have generally have a bunch of small fish, is this because larger fish don't suit a planted tank? I have a leopard bush fish (labyrinth fish) who is suppose to be very hardy but with the co2 going he keeps breathing heavy. I keep turning it down, but he still breaths heavy, i have a 75 gallon tank with an atomic diffuser on one side, with my powerhead and filter blowing the bubbles to the other side to help spread the co2. I'm dealing with BBA badly now and kinda lost as to what to do, are some fish (perhaps bigger fish who take in more O2?) just not suited for a planted tank? I hate to get rid of him as I've had him since getting into the hobby but i also don't want an algae farm nor do i want to have him in unsuiting conditions. I'm using a milwaukee regulator and just turned it down to about 2bps which seems low to me and have one filter outlet causing surface agitation and now just turned on two bubblers. Any thoughts?