I hvent checked my phosphate in quite sme times ..need to invest in better kit but any how what r ur all's phosphate level in ur reef tank...I dnt understand when people say u got to keep it 0 or mine is always 0...u got hve phosphate for the tissue growth...

I am dealing with sme hair algae problem from quite a while...all these years i hve been using that so called ro water from these water mills but recently purchased ro/di unit about two weeks ago...My system has a total volume roughly of 75 gln and mainly it is lps dominated tank with three small fishes...recently i hve acquired few sps and want more in future ...all my corals r in gud health and doin fine...lights r 300 watts of radium 7hr/day and filteration is mainly biological ,skimmer and filter sock..which gets replace and clean every two weeks..Water gets top off about 1gln to 1 1/2 gln every day and water changes 10 to 20gn biweekly...Fishes get fed frozen once a day sme days brine or rods orignal...
I hvent had enough time to get deep down to the problem and figure out whats happening ...Its not as bad as i should say but still there...Input should definately help as what should i need to do that i might not be doin???
thanks