 Re: 90gal Corner Tank
I vote for Sump! You can put all the ugly stuff in there 
Plus, a trickle filter does not offer you anything additional if you have enough Live Rock (except the nice trickling noise that will keep you in the bathroom all night LOL and nitrates) They tend to be somewhat limited as to how you can arrange and fit stuff in them.
Sump, biggest tank you can fit in there and make it the way you want! Or you can go with the ecosystem mud filter.....just thought I would throw that in there! Decisions decisions!!! Have fun!
Can't comment on the light really....12" fixture...is that how long it is? How deep is the tank... _________  I Love My Sig By John Hawkins!!!!!!!!!!!!!
Date Started 9/04 58 gallon Oceanic Tank, 20 gal DIY sump/fuge w/ Kent Marine Auto top-off, Air Water Ice RO/DI, 10,000 K 175 W MH, 2 VHO 03's 96W each, AquaC EV 120 Skimmer
80 lbs LR, DSB in FUGE, 1 - 2 " LS in tank
Black Brittle Star, Chevron Tang, Crocea Clam, red & green Lobophyllia, Frogspawn, Porites Frag, Caulastrea Frag, Green Ricordia, Asst. Zoas, hermits, astreas, stomatellas, fighting conch | 
