Ok, my RSM 250 has been up and running for 17 days. I have 3 green Chromis and 8 Snails. I have green algae and I am getting some purplish spots on my live rock. My salinity is 1.025 and everything seems to be looking good. The problem I'm having if any is the store where I bought my RSM 250 did not have any Water Test Kits and I didn't get one with my aquarium. I went to another store and they sold me two test kits; 1 Salifert NH4 Profi Test Ammonia and 1 Salifert NH3 Profi Test Nitrate. I have tested 3 times at 3 days apart and I am not getting ANY reading! Is this normal? Has my tank cycled? Not sure if I need any other test kits or if the ones I have are of good quality. Anyone have any input? I don't have a clue...