Thanks for all the info. And the very useful answers. I have one more problem. My 50gal. tank has been running for almost 3 months now. I have a Blue Damsel, Tomato Clown and a Yellow Tang. 3 hermit crabs, 3 turbo snails a chocolate chip star and 1 Brittle sea star. Oh and a cleaner shrimp. Since I decided to make it a fish only tank, I keep the 15lbs. of live rock and with my aragonite sand bed everything seems good. At first my readings were: pH 8.3 Nitrite 0ppm. Ammonia 0ppm. And my Nitrate 10ppm. But now everything is the same except my nitrate. It climb up to 20ppm and I change 5gal. Per week. My protein skimmer is doing its job, I removed the ceramic bio's from the canister filter and it's the same. Today’s readings are, pH8.3 Nitrite0 Ammonia 0.25 Nitrate20. What am I doing wrong? Please everyone I need your guidance again. :help:


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