first couple pics looks like dino. what are your nutrients at? look into running a uv.
as for bryosis, u can slowly increase mag to 1500 and let it sit there for awhile. it will kill it naturally without dosing any chemicals.
in mean time, work on balancing your nutrients, get some good...
work one problem at a time. I'd start with your nutrients. you're gonna starve your corals with those double 0's. you're gonna encounter a lot of issues with an imbalance nutrient system.
i have a few tangs in my tank that a "tang police" would hate me for, but i never fed them any nori. i do feed lrs reef frenzy once in a while and that does have some nori in it. :rolleyes:
ive had luck with copperbands. current one i have is almost a year... previous one that didnt make it when i had a power failure was 2 years. good beautiful fish to have overall if you are lucky with it.
i dont see anything bad in your pictures. whats your parameters like? have they been consistent and no large swings?
also, see any bite marks during your inspections? any pe on the current sps u have currently?