I've been having a long term fight keeping alkalinity up. I've been working on maximizing the output of my reactor for the past several months and I finally concluded that I can't get much more out of my existing reactor, so I have decided to purchase more capacity.
Hello...GEO 818. Size matters. The plan is to move to the 818, then add my existing PM "618" eventually when the 818 hits maximum.
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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