Origami January 16, 2009 Share January 16, 2009 I have a mixed tank. I have a kalk and calcium reactor both. I still have some 2 part solution left that I used to use. Do you think I should add the calcium part only to bring the alk level down? Your calcium level will deplete 20 ppm for every 1 dKH that is used up in the calcification process. Just monitor your calcium levels and add calcium as the alk depletes naturally. Personally, I target 425 calcium and 10 dKH alk in my system, but there's a wide range of "acceptable" parameters. Alk seems to be the most critical figure for growth. Keeping it above 8 seems to be the generally accepted wisdom. Link to comment Share on other sites More sharing options...
bcjm January 17, 2009 Share January 17, 2009 Your calcium level will deplete 20 ppm for every 1 dKH that is used up in the calcification process. Just monitor your calcium levels and add calcium as the alk depletes naturally. Personally, I target 425 calcium and 10 dKH alk in my system, but there's a wide range of "acceptable" parameters. Alk seems to be the most critical figure for growth. Keeping it above 8 seems to be the generally accepted wisdom. I can't seem to get my calcium ever more than 400 ppm. What else I can do since I have a kalk and calcium reactor already? Link to comment Share on other sites More sharing options...
djcerna January 17, 2009 Share January 17, 2009 remeasure your Mg++ and recalibrate your PH probe. Alk, CA, Mg & pH are all related. David Link to comment Share on other sites More sharing options...
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