So, its been a while since I had to post...and I'm very sad to be here posting again! Altho, so many of you are so helpful. Well, once I got my 55g tank straightened out, and was beginning to stock my tank. A family member was selling her 75g and had 2 kissing gourami's and a catfish that she was going to put down b/c the people didn't want the fish with the tank. I decided I would adopt these fish, and its been a nightmare. I should have walked away when I saw the dirty water she brought them in, but, being naive, I took them and placed them in my tank minus the dirty water. I pulled the catfish back out after noticing a sore under his belly. I tried treating him in separate from the other fish and he didn' t make it over nite. I noticed he had a filmy covering over his skin and the gourami's had cloudy eyes. I had some neon tetras in the tank and one red velvet wag. I started to take a closer look at the smaller fish and it looked as if they had ich and fin rot. I went to get meds right away and started to tread the tank at half dose, have treated for two days now and this morning i find a tetra on the floor in front of the tank. Just tonite one of the gouramis died. I don't think the other will last much longer. I did a water change right before I started to treat the tank. I checked my water levels today and everything is normal. I feel like I'm just waiting on all of them to die off now. I don't like to watch them suffer. Should I continue to treat or try to put them down? Also, I was wondering, Im pretty sure I will have to start my tank completely over, should I boil all the rocks and decorations and empty all the water out of the tank. I don't want to get anymore fish diseased. I'm still fairly new to this and have yet to be able to enjoy my tank. I need a "Dummies guide to fish keeping " i guess. thanks in advance for all your help.