I have a 3 stage RO unit which includes a RI unit, I did a silicates test yesterday on my fresh produce RO water, it came back fairly high, it was within safe parameters for fish only but high for reef tank. I’ve been having problems with hair alga, could the silicates be feeding the algae? At the moment I’m running my lights on 80% blue and 10% white every time I increase white light the algae comes back.
steve
steve