A friend sold his house and did not want to take his aquarium, I've never had an aquarium so I said hey I'll take it. It's a 55 Gallon tank, came fully packed with 4 fish. ( I don't know what they are I'll try to post pictures over the weekend ) One of the fish is completely blind and seems old, but he's a warrior and I don't want to let him go. There's one that's very hostile, pokes and bites at 2 of the fishes (one of them is a bottom-feeder, the ones that just stick to the glass so he's not bothered) he only does it when no one is watching him, as if he knew it's wrong. We're thinking of getting rid of it by dumping it in a lake near our house, don't know if that's the right thing to do. I did a full cycle when i got the tank. The bottom feeder had some bruises on his belly, but I checked yesterday and he seems to be coming along, I added the fungus drops after I did the cycle, and did it again last night. By the way I have two filters for 55 Gallons running, I don't know if that's overkill but my tank is perfect clear. I want to add more fish to the tank but I'll have to post pics so you guys can see which fish are compatible with the ones I know have. Thanks for reading this huge explanation. Oh and I forgot to add, I'm loving my aquarium, feeding them before I go to work and when I get home from work. If I wake up at night I take a little peek, to check on the bully.