I have a problem. My 20 gallon has been set up for more than 3 years never had a problem with it. I have something that looks like ick but I don't think it is. It shows up on only certain fish. It has killed my 2year old clown loach, 2 gold fish and a neon. there are 4 fancy guppies in there that never got it and a small cory cat. I use maracid that usually works well. I thought I got rid of it.Yesterday I brought home a chinese algae eater and now he looks like he is getting it. My question is if its ick why doesn't the guppies or the cory cat ever get it? I am most upset over the lose of my clown loach. I never seen anything like this. I know the gold fish don't belong in a heated tank they were fish we won at the fair and my wife put them in there they did fine for a long time.(just wanted to say that so I don't get flamed for mixing cold water fish with tropical) If anyone knows whats going on please help me! thanx,
Bob
Bob