Thanks Tom and everybody else.

I know the test kits are not real true. I use them to spot any hikes or major changes. I'm not sure how to calibrate them. I wasn't much of a brain in science class.

I, like some others, try to figure out the little things with my limited knowledge, how to fix the little things that many people just don't worry about. Trying to get a very prestine tank. One that is worthy of submitting in one of the best tank compotitions. Everyone that see's my tank says how great it looks but I see little things that I would like to see better. I guess I am a perfectionist which sometimes is a problem for me because I keep trying to make it better. I get it just right and then a couple days I see something that needs attention or change. LOL