The 3 fish in my 29g have ich (or ick). It was gone for 2 days and now it's back. What am I doing wrong? I've been treating with heat at 32C (87F) for the past 11 days. I treated with salt for the first 4 days. I did 50% water changes for the first 7 days. I sterilize the hoses and bucket with bleach between water changes. The filter is HOB. The fish are 2 ropefish and 1 catfish. Tank has driftwood, live plants (dying now), and sand. Any suggestions? The ich did respond to the treatment but could I be dealing with a heat resistant type of ich?