What Causes Color Loss in SPS?

[fablest]

Could be a combo of things. Low nutrients, light stress, or even pests. Have you checked for flatworms or AEFW? Those little buggers will suck the life out of Acros. A quick dip might reveal something. Also, how's your carbon use? Too much can strip colors.

[olanko]

I'm new to SPS, but my LFS said flow is key. I have two MP40s on my 120-gallon, and my Acros are coloring up nicely. Maybe add another powerhead? Also, what's your photoperiod? Too much light can bleach them.

[mixtune]

My Montipora faded when I overdid water changes. Maybe cut back to 10% weekly instead of 20%? Also, are you dosing anything? Too much of one thing can throw off balance.

[Brysen]

I've heard UV sterilizers can help with color. Anyone try that? My tank's too small for one, but I'm curious.