I just got back into the hobby after 15 or so years and I've started a nano tank I have an IM all in one 10 gallon I was running a Fluval skimmer and a Fluval Reef light I am all water parameters seem to be normal although I can only test for nitrates nitrates pH ammonia and salinity but I have a piece of coral that's bleaching after testing I found I have a pH of 8.5 or possibly greater everything else seems to be within acceptable limits but the tank is only two weeks old I started with some live rock out of another tank and some rag alive I also purchase seawater from the store