Hey, thanx for everyone whos answering my questions, I know Ive had a lot lately.. Just got Salifert test kits for calcium and alkalinity. Also I got some supplements for these as Ive heard they can run low in aquariums. However, my readings are tha Im actually on the other end.. Im over the ideal range. My calcium is at least 500ppm (test kit wont go higher) and my alkalinity is about 13.4d(KH)/ 4.8 (alkalinity). Both these results are a little above the ideal range, is this really bad? If so, what can I do? Thanx.....