i accedentaly bought a cat fish with ich on him, and added him to my tank of 2 fish. (only realized until after i put him in). thought i should try save him, so i started using ICH-X. he started to loose the ich, and then after a few days, it shot back at him. i have a bottom feeder, and the cat fish seemed to swim to the bottom feeder, and the bottom feeder would like eat the ich?? i dont know. anyways, he died last night v.v and now my other fish has ich. i dont want this to repeat, but i dont know how well the ICH-X is working. im sappose to add 1/2 tsp. and after a few hours it seems to be fully filtrated out. can i add 1/2 of the 1/2 tsp in the morning, then the other 1/2 at night? and anyone got some advice to help me?