Questions - Need some input

With the heavy snows, epic winds and strong thunderstorms of the past 3 months (in the Cleveland, OH area) combined with my increasing investment in my fledgling reef, I have to really consider some sort of power generator to get through power outages.

The problem is, I have no knowledge or experience with any of them. I have read a bit on various forums on website, but ultimately I like to hear from people with personal experience with them.

So, tell me what you ...

I spotted this guy on the rock this evening. There are actually 3 or 4 of them. They are in a very difficult place to photograph so I did the best I could. The very middle of it is purple, the a pinkish ring, followed by a purple ring and the tips fluores green. My rather uneducated guess would be some sort of zoanthid. My live rock it Bali Alor rock. So, any guesses on what it is, and if it is a zoanthid the common name of it?

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I have been watching a black crab, that looks and acts like an emerald crab. His claws are white and flat on the tips (like an emerald crab) but seem to be a bit more "serrated" on the inside in the arch. I have not witnessed any mischievous behavior but I wanted to see what judgment should be cast on the guy. Should let him stay in the display or IF I can catch him (and that s a big IF) should I banish him to the sump?

I have a video of him from last night.
http://www.youtube.com/watch?v=rRzZfBah0Ho ...

Hello all,

I have posted a video of a critter that I had the opportunity to film. The focus gets better after a few seconds.



I am not sure what the little guy is, my educated (or relatively uneducated) guess is that it is a type of nudibranch. I have see this one in my tank on several occasions, but this is the first sighting in a while. While he is still rather small I would say he has tripled in size over the ...