I am treating the 55 gallon with coppersafe started 5 days ago. I did a water change today as i found a snail I missed when I as taking them out and the snail was dead. I added more coopersafe to the new water as directed. My question is that my clowns started really rubbing and flashing after the water change is this normal? When will it be ok to put my shrimps,snails,LR back in? When is it safe to not add any more?