LIV2PAD Thanks for all the interesting facts and helping me to understand this a little bit more. Yes it would be easier to just leave it but frankly I'm not an eaiser kinda gal. I am finding all this info so interesting and I think by trying to get my fish tank running at the best it can that I will be able to learn more and have healthier fish. I think that mabe you think I am making this out to be more than it is but why have a fish tank if you're not going to try make it run the way your fish will be healthiest. I'm sure if with all the fuss that I'm going to I will eventually leave it be but untill then I'm going to find out all that I can to make it the best tank for my fish.