I have had no luck dealing with what ever this is before i start using chemicals. I turned up lights for pick my ph is 8.3-8.4 0 ammonia 0 nitites 10ppm nitrates and i am getting a little phosphates but barly any calc is 440-450 dkh 10 dont have mag test i have tested every day for a week only have had blues on since i started seeing it. I have a silica tester tank reads 0 i do use a rodi and have a tds 26 going in 0 coming out but did just replace all filters and membrane Plz offer help peroxide im on day 4 still no change skimmer is running and put a air stone just incase