How are you testing your effulent? if you look you are getting a fluxuation of 0.02 to 0.03 per day. Most kits canot measure this fine and the best afordable digital PH meter has a accuracy of 0.01. so unless you are using something to measure your PH that is above the reach of most hobbiests, I would say you have a PH of 6.8 everyday.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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