Brew12
Electrical Gru
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My Tank Thread
Speaking of ORP... I lost my Null Plug so I can't calibrate my probe.... ;FacepalmI blow it away yesterday - normally it would be as much as before the day after - not in this case - there was some very small patches left - and they get a blow today. No cyanobacteria in the refugium. ORP slowly up to around 320 mV as highest.
Sincerely Lasse
I need to make one so I can see what my ORP is doing again.