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Re: CO2 problems



In eutrophic, productive systems with hardwater macrophytes can almost 
completely remove the dissolved CO2 during a sunny day. The result is a 
pH of around 9.5 to 10.0 and an almost complete removal of calcium from 
the water column (a drop from about 60 to 0 ppm in some lakes that have 
been measured). Dont underestimate the ability of aquatic plants to 
remove CO2 from your tank... on the plus side, most tanks are so poorly 
lit that this is not a problem.

dave.