[Cindy]

I wouldn't put in any more than what the directions say to since it may cause you fish harm. Why would you want to use more than it states any way? Stick with what the directions tell you, then if that doesn't make the problem better talk with your local fish dealer. Or get back on here and ask some one what the problem may be. But give more details so that all of us will be able to help you.Good luck and don't over do what the directions state or you may do harm to your fish. Remember that just because they are dissolving fast that doesn't mean that they are not working, it only means that they are suppose to do that to help your fish faster.