Ok, I've managed to measure the tank. It's a Clearseal, hex shape and it's 18.5 inches high and 55.5 inches around. The filter is a Fluval 2 plus. I have it filled up to 3 inches from the top. The only thing I can think to do is bring the danio's and gourami to the fish shop though hubby now wants to get another tank to accommodate them.
I thought we had another member with MTS(multi tank syndrome)
. This is a very real disorder, and very contagious
! I say "Go For It!". Get a bigger tank and maybe another pink kisser to go along with the one you have. That's how I ended up with 8 aquariums. But seriously, a bigger tank is really easier to maintain and the fish seem so much happier. My husband isn't very happy, but I can't help it if he doesn't like fish.