Well I am setting up my 90 this month. I am sure some of you may know a little about it. Anyway it was going to be a all diy system including the tank, but problems arose w/ my plastic supplier and my price literally doubled on the acrylic to make my tank. So now I am just going to go ahead and use the 90 that I already had sitting in my shed . This is going to be a high energy reef system w/ almost all sps corals. There will eventually be several clams spread across the bottom of the tank. It is going to be a bb system, but I plan to try to get zoa's to eventually fully encrust the bottom of the tank. The hardware will consist of a dual 250 w halide lighting system, a ampmaster 3k for closed loop, a iwaki rltx 30 (950gph) return pump, a diy calcium reactor, diy skimmer, diy sump, and finally a diy stand made from walnut and birds eye maple. I am going to use all schedule 80 bulkheads for durability and piece of mind. The closed loop will draw from 2 1.5" bulkheads in the lower back portion of the tank, this plumbing will go down into my stand where I will have the pump on a little shelf, then back out it will go feeding a spraybar on the bottom of the tank, and four 3/4" bulkheads w/ lockline inside the tank to direct flow. The drains will be 1.5" standpipes w/ durso's both of which will feed into my skimmer section of the sump. The return pump uses 3/4" plumbing and will feed back in thru the bottom of the tank inside the overflow and there will be a bulkhead at the top w/ lockline to direct that flow also. Anyways I am going to start a post in the diy section outlining the assembly of this system, so keep your eyes peeled!