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Bertoni came up with an interesting observation: if you are supplementing [an dI hope I'm quoting him right] with 2-part or Kent's or whatever, you're actually adding some mg.
If you are supplementing with kalk, you are not, because there is no mg in kalk.
So if the corals are using mg, and you are not supplying it via your supplement, the net effect is that you are losing mg and need to supplement more.
That may reconcile Randy with Bertoni. Bertoni makes those comments in the thread I linked to above.
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Sk8r
Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.
Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.
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