On my tanks I have pfo ballast. One tank has a dual pfo HQI and the other has a dual regular pfo.
I was thinking of changing to electronic ballasts (ice cap). The only reason to switch is because of energy usage, well actually to try and lower my electric bill. Does anyone know how much or even if the electronic ballast would use less energy? Total I was planning on using 7 ballast between the tanks so every little bit would add up.