Emgine8ff : once again thanks for the input , I think I will be switching over in the near future as well , so I will keep things updated as I get started. For now I think I will add my Kalk reactor back online , just need to order a new motor for it from Deltec , as it has given out on me .
Do you have a thread going as well , wouldn't mind seeing a few picks of your setup.
Flipp77 : There are many great threads out there with ideas you should be able to use in your setup. I would recommend a few things though : These are only my opnion though. I think tank heights should be in the min range of 28" and up, as I find with a standard 24" height once you have framed in around and trimmed it out to cover the tank trim , your glass window in the wall can shrink really fast. Not as good look.
Front access takes away from the overall look in almost all cases , ( I can think of few that still look real food .. RalfP comes to mind ) but most seem to loose the effect of in wall.
Try to keep the trim simple to not take the focus from the tank. A simple flat stock trim seems to work well.
Do not go too low with the stand , otherwise you always feel like you are bending over to view .
As far as framing it in , unless you are using a bearing wall in your house , it is quite simple , if it is bearing you should check with someone in your area that is knowledgeable in building as far as specing a header or beam size for your opening . It is generally nothing to extreme though especially with a 4' to 5' tank length.
Hope that helps a little , feel free to ask if you have any questions , and or check out some of the other real awesome setups out there.