I did calibrate it in Pinpoint solution. As far as a well run reef tank, mine is nice established reef with no problems and good growth.
However, I have been running a way undersized skimmer for 3 weeks after I sold my old one, and put a new Royal Exclusiv cone on pre-order. So, I am wondering if that may be my issue, since I have been doing 30 gallon water changes every 5 days.
Anyway, I will read up on the ORP, and see what I need to do.
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