I think the problem is that I am dosing kalk through my ATO. When it is either warmer than usual or less humid than usual, I end up dosing more kalk through my ATO due to higher than normal evaporation.
Additionally, I believe the Seachem Reef Salt that I use has a dkH of 10. When you throw in weekly water changes with the kalk that is added, it has been difficult to keep my alkalinity between 7.0-8.0.
If you look at my dkH readings in the post above, you will see there have been only three occasions in the last 13 months where my alkalinity has been below 8.0.
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We're not put on this earth to see through one another; we're put on this earth to see one another through - Gloria Vanderbilt
Current Tank Info: 175g reef (48"L x 28"D x 30"H), 15g Refugium, 30g Sump w/ASM G3 (gate, mesh, & recirc mods), 10K GPH flow via 3 Tunze 7096 + return, ATO via Tunze Osmolater, 2x250W Radiums, GFO, Carbon, dosing vinegar/vodka, Alk, Ca, via 3 BRS dosers & Apex.
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