Questions - Need some input

What tank manufacturer would you recommend for a 90g RR tank? I am looking for glass with a center internal overflow with possibly 2 returns. I currently have a 75g Oceanic RR and want to keep the same foot print so I can use my existing stand and canopy. My current tank is 48x22x18 I believe. I have been thinking Aqueon, Marine Lane, Planet Aquariums, not sure of what else is out there. I don't live too far from the DFW area. Thanks for any help deciding.

I need to get new power heads for movement in my tank. I have a 75 Oceanic. I was planning on 2 power heads, what would your choice be for GPH? I am ranning a mag5 for a return pump.

Thanks

I have noticed my GSP has a bad spot on it, is this aptisa. What can I do to get rid of this?

I hate to ask this but i was looking at the coral tonight and began to wonder if it was still alive. Coral was bought is early June and was identified as a Green Lobo, I looked at them and I am not real sure thats what it was. I have not seen any green around the edges in a few weeks. Is there anyway I can tell for sure if it is still alive?

What inverts would you sugget for a clean up crew on a 75 gallon reef.
I am thinking red legged hermits, cerith snails, and ?? I am going to order from liveaquaria.com


Thanks
Travis