Do you test for O2? JBL’s new TestLab Marin kit suggests you should

The JBL TestLab Marin is a full fledged test kit for saltwater use which already included pH, KH, Ammonia, Nitrite, Nitrate, Copper, Calcium, Magnesium, Silicate, Phosphate and now also includes Oxygen. The updated TestLab Marin added oxygen to the mix…