Well... looks like my CO2 system might be a bit too efficient now. I noticed the fish didn't look real happy today, and when I measured the KH - PH curve for CO2 levels I'm showing that I probably have somewhere between 100 ppm - 180 ppm. Even with the error of the measurement this is way above safe levels for fish I think. Though, not bad for a CO2 reactor of yeast and sugar... Any ideas for reducing the CO2 levels without putting anything into shock? Jesse Doerr _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member