Whats the difference between the Tek and Tek Elite? I'm thinking of switching over to T5s. I currently have 2-150w MH and 2 96w PCs. I'm thinking of going with a 6 bulb fixture over my standard 90 gallon.
The standard TEK has no fans but does come with the acrylic shield with the unit now. It also comes with hanging brackets but you would have to purchase the legs separate if you wanted to use those.
The TEK Elite comes with active cooling fans and the acrylic shield. The TEK Elite also comes with hanging hardware. You would have to purchase the legs separately with this unit also. The legs are also on a great sale for both units.
The TEK is said to use 95% reflective material for the parabolic style reflectors and the TEK Elite 98% reflective. Both the TEK and TEK Elite use Fulham Workhorse ballasts and not T5 ballasts that are run to true Spec.
As Ryan said, they are both discontinued models. The TEK elite is hard to find and I have still seen the standard TEK's available at great prices on line.
If going with the standard TEK, I would run it without the acrylic shield and place a fan just above it blowing on the center top of the unit to help with cooling.
If you can find the TEK elite, make sure you run it with the acrylic shield for proper cooling to work as designed.
My guess is that a TEK without the shield and a fan blowing on the top of the unit would perform just about the same as a TEK elite if not just a nominal reduction in performance as they both use the same ballast.
You can get great deals on both of them and they are very good choices if you want to get a good unit and save a buck. I have very good success with a standard 8 bulb TEK on my 120 SPS dominant reef.
As of now reefgeek.com still has several sizes of the standard TEK on a great sale but look to be sold out of the TEK elite.
Hope this helps some,
Joe