redox

So I’m in the middle of switching from Neptune to Ghl and currently both are set up on my tank, but the probes are reading way differently the ph and orp probes to be exact, I went through and calibrated wash brown for each system and double checked with new calibration solution to make sure...

Hi all, I want to know how use the ozone. I Have a 200 Mg/H generator for 475 gallons of water. I will try to use at half power. I have a tunze 9430DC skimmer for the moment. My question was how many time I must use per day ? I can control It by profilux and redox. I have pulse 10 min and...