I suppose it could have been a build up in the reactor. It's newly installed and I haven't fine tuned things yet. At the time of the reading I was only pushing about 60 drops per minute through the reactor so it was staying in there a long time. Today I changed that and am running almost a steady stream through the reactor and will try to fine tune it with CO2 input only based on the Alk of the effluent.
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150 gal Custom. Born 5/7/07. 50gal, 29gal, 20gal Sumps. 30gal Frag Tank. ETSS 800 Skimmer, Deltec APF600 Skimmer. PFO Solaris Lighting on Display and Frag Tank
My Tank Thread
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