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![]() What salt?
I use IO and had the exact same problem as you about 5 years ago. Now I add enough magnesium to get my levels to about 1380ppm and I have no problems at all keeping my alk at 9 or 10. Before the best I could get was 7 or 8 and I had NO CORALS! I would add some buffer, but no real change. Eventually I noticed that it was all precipitating on my pumps and heaters.
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250 BB Starphire SPS, clams, & zoos 3 x 250 DE, IC 660 W/T5s OM 4-way, Hammerhead Pump Calcium, Kalk, RO filters, magnesium, Excellent prices |