DWC problem?

Doing a 4 site (6" baskets) 20 gallon tote DWC.. I was wondering if anyone had the problem of the tote bending or buckling in the middle, which in turn makes the lid not stay on properly.. Even if you were to put it on, it pops off due to all that water in the tote? Help?

IDK... maybe build a wooden frame around it with 2x2's or something?? If you don't get a workable solution I'll move this to the Hydro forum where you will probably get better results, if you like.

Drill 6-8 holes and connect through the holes with zip tye's or duct tape works well too.