Who Gives A Fish Forums

How often do you do water changes? I bumped mine to 20% weekly and saw a big difference. Not a fix-all, but it helps keep things in check.

What's your nitrate level? Low nutrients can make corals aggressive.

I'd be cautious with the Hydra 52, given its reputation for being a powerful fixture. Most chalices and acan lords I've come across seem to prefer lower light conditions, though I've noticed Acan Bowerbanki can handle more light than lords.

Start with conservative settings and gradually increase ...

I'm curious too, heard those Hydra 52's can be pretty intense on acans, supposedly melts the mouths right out. I've got mine set around 80% for the blues and violets, and then 30% for the rest, just kinda eyeballed it to see what looked decent.