Wow a lot work but its all paying off! Keep it up
Thanks Steve, i'll get there in the end, i wasn't expecting to have the stand issues, but i'm glad it was pointed out so I save myself from disaster.
It is not timberlock but ledgerlock. Same company but two different products. Ledger lock has the shear strength needed. You should be able to find some at any local boxstore. If you cannot find them use carriage bolts and slightly countersink them so they do not interfere with your plywood facia. Either way the idea is to transfer the load to the front and rear 2x8. Although I will probably get knocked for promoting this you could bypass the load bearing fasteners and just glue and screw the 2x4 against the 2x8. essentially a lamination. Glue can be effective here because the grain will be the same.
-Matt
Yes, I believe either the 2x8s, or the solution from tundra1000 would work.
So cdrewferd and tundra1000 I worked on a fix tonight and here is what I did. If you think its an adequate fix BUT would benefit from being screwed AND glued then its no big deal for me to remove and glue/screw.
I attempted to run the 2x4 48" across the front 2x8, under the joists, but my 2x4 wasn't completely straight and one end would not have been supporting, so i went with 2 20" pieces.
Here is what i did - In both front corners I placed a 2x4 directly under the outer joist (supporting the tanks sides) and the center joists. These were screwed into the 2x8 frame with both decking screws on each end and a 3" lag bolt in the center.
<a href="http://www.flickr.com/photos/29441159@N03/8512094772/" title="IMG_7466 by owenspackman, on Flickr"><img src="http://farm9.staticflickr.com/8390/8512094772_c58a42b599.jpg" width="500" height="375" alt="IMG_7466"></a>
<a href="http://www.flickr.com/photos/29441159@N03/8512094592/" title="IMG_7462 by owenspackman, on Flickr"><img src="http://farm9.staticflickr.com/8369/8512094592_106fb889ec.jpg" width="500" height="375" alt="IMG_7462"></a>
To help the 2x4 supports I placed a horizontal 2x4 directly under the 2x4 support and under the outer 2x4 joist supporting the tank edge. This was screwed into the 2x8 frame.
<a href="http://www.flickr.com/photos/29441159@N03/8512095136/" title="IMG_7468 by owenspackman, on Flickr"><img src="http://farm9.staticflickr.com/8379/8512095136_a7f7d472fa.jpg" width="375" height="500" alt="IMG_7468"></a>
Legs were then created with a 2x4 and 2x8 screwed together at a 90 degree. These were placed in the corners, directly under the 2x4 outer joist. The 2x8 finishes about 4" after the front of the tank.
<a href="http://www.flickr.com/photos/29441159@N03/8512094374/" title="IMG_7470 by owenspackman, on Flickr"><img src="http://farm9.staticflickr.com/8508/8512094374_1dda276e66.jpg" width="375" height="500" alt="IMG_7470"></a>
In the front center i screwed two 2x8's together and placed them horizontally from the cabinet bottom to under the plywood. The end of the 2x8's finish about 1.5" after the front of the tank.
<a href="http://www.flickr.com/photos/29441159@N03/8510982497/" title="IMG_7474 by owenspackman, on Flickr"><img src="http://farm9.staticflickr.com/8384/8510982497_007604bf6f.jpg" width="375" height="500" alt="IMG_7474"></a>
So now the 2 outer joists are support but the 2x4 support and the 2x8 legs. The two center joists are supported by the 2x4 support. The center of the tank is supported with the 2x8 column under the plywood. That is 5 front supports.
Let me know what you think of this fix.