Are your acans bleaching, or just losing some of the bright colors it used to have? For example, a lot of rainbow acans will turn all red if they are in too high of light. Bleaching of course is a whole different problem. Could be attributed to water conditions, being put in high light (higher than what would just cause them to go a more solid color), etc.
A lot of bright color n rainbow ultra Acans morph after being captive after awhile also as stated they like lower light even shaded some of them to hold colors. Try one you know been captive n aquacultured for couple years if ya can theres some that have proven to hold colors better then others. Also stated you said you've slacked in wc for awhile now 2+ months maybe so could be something there getting outta wack. Do you dose anything n what are you feeding. Here's pics of same acan just couple weeks apart n @ bout 2 weeks captive n bout month or so captive. They are cherry corals pics of the envy sunset you see its not as nice of green n looks to be morphing orange more.
A lot of bright color n rainbow ultra Acans morph after being captive after awhile also as stated they like lower light even shaded some of them to hold colors. Try one you know been captive n aquacultured for couple years if ya can theres some that have proven to hold colors better then others. Also stated you said you've slacked in wc for awhile now 2+ months maybe so could be something there getting outta wack. Do you dose anything n what are you feeding. Here's pics of same acan just couple weeks apart n @ bout 2 weeks captive n bout month or so captive. They are cherry corals pics of the envy sunset you see its not as nice of green n looks to be morphing orange more.
Big Steve
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Actually one side of the colony had more orange than the other...which usually has to do with how much light the coral received in the wild. It has changed a bit, but I actually prefer more orange...so in my view thats a good thing!