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Originally Posted by Dale
One problem with going B.B. is that you lose the natural buffer that the crushed coral affords (I planned ahead for this by adding C.C. to my R.D.S.B.)
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Don't worry so much about losing this buffer, there was a test done years ago with a BB a crushed coral and a DSB tank left to crash. the BB crashed first but it was only two weeks later when the DSB tank crashed. If I remember right the time frame was over a couple months.
even if it did help though, with the PH your water would have to drop to to release any significant amount of Ca you are going to have bigger problems than low Ca. Also if it did release Ca you have to think of all the other stuff bound in that sand, Phosphates, ect.
Steve
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