Have a Red Sea 50 on the right. A Red Sea 90 on the left. The right side is for soft frogspawn and hammers. Left is for SPS. What settings should I set the lights to?
Some type of light meter would be best. I use a par meter but I've heard of some using phone apps or other type of meters. I like to set my lights so the tank looks good to me then I adjust the intensity to get the par I want for the coral being kept.