Help!! before I quit this hobby. I have a 120g tank that has been running for nearly a year. I am overrun with hair algae. These are my tank conditions as of testing this morning. Temp range is 77-79Sg is 1.025 constantCa is 420Mg is 1440Alk is 7.3 ( I use Tropic Marin pro which seems to produce low alkalinity?)Nitrates are 10Phosphate always reads 0I have a Mag 950 return pump, 2 MP40'S, I Koralia 4 and 2 Koralia 1's., so flow is good (too good according to my frogspawns)I run an Octopus 150 protein skimmer and a BRS dual reactor with GFO and carbon.My fish load is 1 Powder Blue1 Tomini2 Clowns3 Wrasse1 Blenny4 Anthias.3 shrimpsI have 4 T5's and 2 150 MH , T5 7 hrs a day, MH 5 hours a day. These were all new 2 months ago.(Could they be the problem?)I do a 25 gallon water change weeklyNow,here is the strange thing. My CUC is disappearing. I have hermits which are OK, but my snails are dying. I have no idea why, my shrimps are great. I am at my wit's end, but don't really want to use chemicals that may harm my fish which are thriving.Any ideas???