Well, I assembled the stand that we sketched up, I did change some of the lumber, and added some trim for beauty and function (rails hiding the exposed edges of plywood). I did use some flat 90's and T's for stability (hidden and in back), but the rest is dimentional lumber as post and beam platform construction, screwed at joinery with 3" coated exterior deck screws. The plywood surface is 3/4" (23/32) screwed at 16" centers around the perimeters. As you can see I chose not to clad the sides as it appeared to be too enclosed, this is all the lighter and easier to disassemble. The postes of each tier can be replaced with variable height posts for different tank size and arrangement. The bottom tier tanks would be limited to <30" in length with the center post, If the center post was removed a longer tank could fit, but I'd go easy on the second tier's center weight.
As you can see it held me, and I feel it will be more than adequate support for the 1200 lbs. The set-back stacking will allow for acess to the front of each tank, vacuuming and plant care may be a bit cumbersome, but not impossible. There may be limitation to the lighting options for clearance reasons, but like I mentioned the posts can be customized in height to some extent, and maybe I'll try to undermount some. All the wood allows for easy placement of multi-outlets and drip loops, I will use a surge protected GFI just to be safe.
HOB's may be a bit tough at this height, but posts can be adj. Now some clean-up, sanding, primer and a good exterior grade paint ( I prefer NO VOC).
I am still as always open to suggestions/criticisms, please post. If you want more details re: construction price list and or cutting/layout list PM me and I will send whatever, or even e-mail if you wish (The whole worx, pix incl.) NOTE: I am not the best at writing instructions so you'll have to forgive me.
Thanks for all the help! Just need to finish feeding my
MTS....
Dave