09-15-2012, 09:04 AM
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Originally Posted by AbbeysDad
I agree with Gwen....once your nitrosomonas and nitrobacter colonies are up to speed, you will rarely, if ever, measure any ammonia or nitrite. However, since you are measuring high(er) nitrates, it looks like your getting close (although I think it would typically take a very large water change to drop nitrates from 80ppm to 20ppm).
Due to buffering, pH tends to be very stable. Often folks that attempt to alter pH find it to be almost a loosing battle as pH tends to return to previous values. As I learned in my (truckloads) of composting days, pH often goes acidic during periods of organic matter decomposition, but returns towards neutral when complete.
What is the pH of your source (tap?) water?
tap ph is 7.6...24hrs with a bubble stone....actually ilet it go for 2 days before i checked it