I have 3 mixed reef tanks with fish--Office 75 gal, Dining 120 gal, and Living 75 gal. All have sumps with refugiums, protein skimmers, and APEX with Trident. I have never measured the phosphate before but I bought a Hanna Marine Master for Christmas and decided to give it a shot. The phosphate measurement has 2 settings and I am not sure which to worry about. One is Phos in ppm and the other is PO43 in ppm. The readings for all 3 tanks are below.
Off
Phos- .29
PO43- .90
Dining
Phos- .03
PO43- .09
Living
Phos- .26
PO43- .80
Here are screen shots from the Apex
Any help is greatly appreciated.
Off
Phos- .29
PO43- .90
Dining
Phos- .03
PO43- .09
Living
Phos- .26
PO43- .80
Here are screen shots from the Apex
Any help is greatly appreciated.