Doug, when I first setup my new "Alk" reactor, I had to raise the levels with supplements (CaOH & CaCO3). I did this once the levels were stable. I find now that the reactor will actually raise the levels. Have you ever seen Sanjay's formula for tuning a reactor? Might solve some of your problems.
I turned my pH monitor off 'cause it was driving me nuts. Now I use visual queues to determine the state of the tank. You may recall when I was all panicky about my pH.... my fish and corals weren't panicking, just me. I drip the effluent into a high flow area and it seems fine. Like I said, sometimes I just add kalk for no good reason...just feel like it.
Also, as I've mentioned in a couple of other threads today, first determine what your consumption is, then determine how to replace it. A Ca reactor AND saturated kalk may be too much for your tank....do your animals use as much as you put in? Most people don't know.
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Brad
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