Once you have concluded that your low pH is caused by too much CO2...solving that is difficult. My tank is just too sealed up and doesn't breathe well. The herbie overflows eliminate a lot of natural aeration that would normally help. It is a brand new house that is tight and even in the summer the air conditioning keeps the house cool and closed up. I need to feed my skimmer outdoor air somehow.
In my case, the Ca reactor has been shut off for quite a while and Kalk alone has driven up my Alk..thereby solving my low pH problem for the time being.
A number of my coral lay down more tissue at peak pH above 8.2 than they did when I couldn't get the pH above 8. I don't think there is much doubt that higher pH is better than lower (to a point of course).
I would be happier at an Alk around 8-9...but I'll push that higher in order to keep the pH above 8.
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank: http://www.canreef.com/vbulletin/showthread.php?t=28436
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05-27-2009, 10:03 PM
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