Quote:
Originally Posted by wobbegong
Yeah If you use it often once a month it should be done to get accurate readings..
Are you using distilled to calibrate ?
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no , just fresh RO water. I test the tanks 1st , x2 times , then do the refarct 2 times as well. then check the tanks one more time to make sure everythings comes in the same reading , if it doesnt , ill recal it again
I also have the cheaper ones, But seems to be working fine for 5 yrs now