Just about had it now!!!

[findingnemo1]

Okay i need some advice before i just pack it in.

I have a 90 gallon that is the downgrade of the 120. I have always had a nitrate problem. So in order to fix that i have sone weekly water changes. Cut down on the food. Downgraded my fish load. But i still frickin have them. I have a Montipora confusa that is sadly pretty much toast. All the flesh is receding from the top. And a birdsnest that is showing skeleton. And have lost a few more in the last month.
Oddly enough the acroporas are all healthy and thriving.

Here is my system in a nut shell:
90 Gallon
40Gallon Sump
Euro reef rs250 skimmer
2-400 watt halides.
2 of the biggest seio pumps
1 of the medium seio( sorry can't remember there size numbers right now)
Ball of cheato in the sump
2 phosban reactors running carbon and phosban
window fan keeping temp at 80 with halides on
Tests are as follows

Calcium 400
Alk 9
Ntrite 0
ph 8.2
Nitrate 60

So here were my thoughts. Before i just give up in general by flushing my money away

Either
A: a diy denitrator
B: Zeovite
C: A refugium tank set up beside the tank somehow feeding water back and forth
D: Reefresh
E: All or a combination of the above or
F: GIve up and sell it all..lol

Suggestions?

Thanks Craig