09-03-2007, 05:48 PM
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Question about how CO2 with relation to pH and KH
I got a chart to measure CO2 with my test kit. It takes your KH and your pH and gives you your CO2 level.
My current pH is 8 and my KH is 8. According to this chart with such a pH, there is no way to get 15ppm of CO2 in the tank (what I think is recommended for plants?). Currently I been giving half a cap of Flourish Excel for my 28 gallon tank to try and supplement my plants since I don't have CO2 injection now.
With my water type is it pointless to get CO2, will my water not be able to hold onto it with its high pH and KH? Or is there not a relation once you get injected CO2?
Should I try to bring my water pH down? What happens then when I have to do my weekly 10% water changes with my tap water which is hard and ph of a little over 8 (I think its come down to 8 over the few weeks I have had my tank going so far, but started higher). Will I have to buffer the pH after every water change? How will fish handle this once I finally get them in?
Any and all help appreciated.