As far as the coral it probably will take a few days to be sure if it's gonna open or not as it's probably adjusting. if you don't see an improvement I would place them higher up in the tank, you have a deep tank and only 2 bulbs. :-(
Do you have a picture of this brown slime adn the coral? There is something called brown jelly disease I think and I'm not at all familiar with it but a picture may help others.
Anything CAN be something to worry about with fish and corals.....does it look like the fish just got scraped on a rock perhaps? Not sure about the white stuff unless we see a picture, ya know it's worth a thousand words. LOL