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zdam20 · 04-09-2009, 03:56 AM

Thanks for the reply Nevermore. What I am doing is controlling the ph with a controller hooked to a solenoid on the CO2. So as I add kh the ph in the tank will go up and the controller will open the CO2 to the reactor to bring the ph down. I'm actually using 100% RO water so the only buffers in the tank will be what I add back in. Don't know if I'll have to add calcium to keep that at 20 ppm for my crs. I'll have to test for that weekly and see. Thanks again for the response.

04-09-2009, 03:56 AM	#3 (permalink)
zdam20 Member Join Date: Mar 2009 Location: Bismarck, ND Posts: 66 iTrader Ratings: 0 Plant Points: 4450	Re: CaCO3 for alk Thanks for the reply Nevermore. What I am doing is controlling the ph with a controller hooked to a solenoid on the CO2. So as I add kh the ph in the tank will go up and the controller will open the CO2 to the reactor to bring the ph down. I'm actually using 100% RO water so the only buffers in the tank will be what I add back in. Don't know if I'll have to add calcium to keep that at 20 ppm for my crs. I'll have to test for that weekly and see. Thanks again for the response.