upgrading-advice welcome!

[richtg]

I am on the verge of bumping up to a 90 gal/45sump for my ever-expanding reef. I am on a budget (aren't we all) and here is what I have come up with so far:

-hesitant to buy a used tank (heavy metals...) new @ inter-american for $150 + drilling. I have the 45, so I need a stand to hold both. I like DIY's, but sometimes it's more economical to buy pre-fab. Any ideas?

-My third experimental painted wood canopy is not standing up. (I use fluorescents, so the built up humidity finds it's way through each type of paint I've tried. Any suggestions for a good hood-type canopy or paint?

-I need a good pump to move 1000+gph for <$250.

-I bought my oolitic sand bulk from Danny Wai and like it. I will buy more unless someone has some to sell me. A bit more LR, perhaps...

-finally, I would like to buy some new pc's. Where is a reasonable deal to be found in town or the internet. Any bad experiences from buying lights on the net?

Thank you for your time and valuable advice to clatter around in my brain. Rich.