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ORP probes need to 'break in' and can take weeks to read properly. Fortunately ORP is pretty much useless anyhow. I don't think apex can display SG. salinity is better anyhow.
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Simon
Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones!
Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs
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