Bubble coral imminent failure

The bubble coral isn't doing very well....it makes me sad. The bubbles haven't been out for about 5 days now and there is algae growing on the skeleton....sad sad sad.

I had to walk next door to hasting to look something up on the bubble coral. I have not been able to find any specific information online or at work. But luckily they had a book on marine inverts which stated that the bubble coral will retract its bubbles only when it is being poisoned by poor water quality or other corals...so I'm trying to fix that now.