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WTB Neptune PM1 module

eli smoke

NJRC Member
I monitor orb, but I have no idea of what is a high or low number. 372-411 rises as the lights go down and lowers as they ramp up.
 
Just starting to research it along with ozone. I see if # drops that could indicate something does in your tank. A number to aim for with ozone is 300-375 but it does fluctuate with ph
 
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