Corals turning almost white

[CandyCane]

Originally Posted by reefwars

bring your water into red coral for a full testing is your best bet if you dont have the proper test kits.would look into a better light as well or keep less demanding coralshope this helps

Whats wrong with 6 T5 bulbs over a 20gallon tank? sounds like lots of light to me. I've done the math before