Good decision! I don't think that you will regret it at all! My tank is 23" deep and I am very pleased with the growth and coloration of my corals and I have the G series. I think that I read somewhere that the I series is 40% brighter. I am sure that Dick knows and I bet he will check in soon.
At
MACNA, Dana Riddle said that we often over light our corals. He is supposed to be publishing this study shortly.
