I see, so each time i set up the QT, i should take one of the bags of coral chips from my main tank sump, then throw it away after the quarantine period? Also, just curious if the medication is to attempt to prevent the fish from getting ich or other diseases? What will happen if i wait until the fish are showing signs of illnesses then treat them with the medication? Sorry for the newbie questions, only had my tank set up for about a week so still learning a lot. Thanks Sent from Singapore Reef Club mobile app