I think my rainbow shark is starting to show signs of ich. I just noticed today that he seems to be rubbing his sides on the gravel and when i looked closely I noticed a spot or 2. The other fish seem ok so far. I also noticed that his dorsal fin and his 2 side fins are looking a little white on the edges. Could this be from the ich also? I am about to treat my tank with Rid-Ich. I was also wondering if it would be beneficial to add Pimafix and Melafix to the tank. I have some already but wasn't sure if it might interfere with the Rid-Ich or not.