Hi all, I am new here and have a question for you. I have a sorority of 7 females (as well as 3 males) anyway I have had the females just about 6 weeks and one is not doing well. Her fins are either getting nipped at or she has them clamped down, they were all bought at the same time out of the same tank. But I want to move her to an empty 5 g tank I have...it was going to be for my next male but I want to put her in to see if she will do better. So first question, it is a new tank but I filled it with my established tank water, should I still put in an old filter foam as well or is the water enough. And what else should I put in the water, some salt/epsom salt? I can't get IAL unless it comes through the mail but I can get black water extract from the LFS (I think that is the right name) and should I remove the carbon. Anything else? It is not fin rot, and the little heater I bought for the tank will heat it to 78, no other option on it.