[quote="StirCrazyI was talking about the 1 hour you waited after filling the tank and turning on the equipment till the time you started your tests. sorry I might have typed it wrong.[/quote]
Okay, I understand
In all tests, there is still the control tank of water using no carbon with which to compare the pH changes of tanks using various brands of rinsed and unrinsed carbon. I almost didn't use a control tank, but realized I would have nothing to compare the results to, such as they are. There seemed to be a marked increase in pH in the carbon tanks compared to the slower increase in pH in the control tank. My point is that, initially, adding carbon to a tank, there is going to be a leap in pH compared to a tank that uses no carbon.
The tests were done in small tanks, granted, and maybe not for a long enough period of time. (Unfortunately, I didn't have all day for days on end to put energy into making the study longer.) However, in a larger body of water the pH increase may not be as noticeable. But, then, in a larger body of water, more carbon might be used too. Six of one and Half a dozen of another
Anyway, I did my studies in the fashion I chose because I was interested in finding out what actually happened when using carbon. Along with discovering the higher rate of pH increase, I also learned that phosphate is added to the tank from many of the carbon samples. Maybe not a lot of phosphate, but phosphate nonetheless.
I'd like to see other people doing experiments on whatever topics strike their fancies and sharing that information with the rest of us. We might all learn stuff we never knew before. That was my ultimate goal in doing my studies. And I DID learn things I didn't know before I did the studies
