Evening all,
I'm in the midst of setting up a 450 L-shape tank (6' x 4' x 32"). It's made of 1" acrylic in the front and right side & 3/4" on left side and back. It has a 2" tubular steel around the perimeter that is powder coated. Gen of KritterTanks built it and did a great job !
Here are some of the equipment I'm thinking of using:
Lights-400 watt coralvue dimmable ballast w/lumenbright reflectors.
Protein Skimmer-Reeflo Prokit or H&S 250 in sump model (to save some space).
Calcium Reactor-Deltec PF601S (keeping mostly sps w/some lps).
Denitrator-H&S 150SR (I do like fish and would like to keep some shoals of anthias, but would like to keep nutrients down).
Return Pumps- 2 Reeflow Dart Golds (I'm thinking of using a Oceans Motions or manifold).
Contoller-Reefkeeper Elite or New Aquacontroller.
Water Movement-An array of Vortech Pumps and Tunze Streams.
Sump-100 gal Eco system sump (I don't know if I'm going to actually use miracle mud)
Refugium-I would like to employ a gravity fed fuge on the upper left part of the tank.
That's all for now...I would appreciate your inputs !!
Jim
p.s. tank shots can be seen a www.krittertanks.com (the last 2 shots are my tank).
Phong,
Gen assured me it should be okay, but a liitle prayer could'nt hurt !!
Jim
I would love to hear some of the experience reefer's opinions. For stand, I know they last a long time but this is very close to the water. I have to clean the salt creep on top of my plastic brace every couple weeks or so.
Awesome set up!
I could not find the pics though.
I like using two return pumps also (in case one fails).
I use a smaller one and a larger one. My small one is on a battery back up in case of power failure.
You might not need that much return pump flow if you put the vortechs and tunzes in all the right places.
I believe it's this one..

Thanks for the kind words fellas. I still have to figure out the posting of the pic's....I have some updated shots on my iphone.
Phong,
I know I'm going to have to wipe down the salt creep on a weekly basis...just part of having that "piece of the ocean."
Jar,
I do like the 2 pump in case one fails method also. I'm just kinda figuring with about of 12' headloss going from the basement to 1st floor...I'm going to lose a bit of flow.
Jim
Let's see if this works:
http://www.flickr.com/photos/35287044@N04/sets/72157613616968574/show/
Phong,
You gotta show me how to post pic's !!
Head loss is a problem.
Nice that you can keep all the "stuff" in the basement. 
Wow, that's some tank, I remember Gen mentioning a process of using steel during his talk, but wow, looks like you get the best of both worlds, large tank, minimal bracing (from an access stand point). I would be curious to how this would hold up over time, although unfortunately this is a thing that only time can tell... that is unless you could use those chambers the car companies use to stress something for "many years" in a relatively short period of time.
very cool tank 
The corrosion issue will be highly dependent on the material used. Not all steel (even stainless varieties) are created equal in the corrosion department. You could ask gen what type he used (not that it will change anything now). Ideally, you'd want to use something like 316SS
nice.. I know the brace is powder coated but will it rust after 2-3 years??
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Phong