I purchased Weco instant DeChlor water conditioner today at my lps. Has anybody used it in their aquariums. Their seems to be very little info on this chlorine remover. I'm going to test it tomorrow in the night but I want to make sure if it is good. Also if I accidentally add one more drop than it says will it harm my fish. It says to add 2 drops per gallon but what if I only change half a gallon so does that mean I only put 1 drop to the half gallon tap water?