undertai Active member Feb 3, 2006 #1 How mush ozone should I be using on a 55gal with 20 gal. sump. Most sps and a couple of fish.
jay24k Active member Feb 3, 2006 #2 Buy a controller or a monitor imo. There is a great thread on it here. Many people should for no higher then 400 orp.
Buy a controller or a monitor imo. There is a great thread on it here. Many people should for no higher then 400 orp.
