Randomblame
Well-Known Member
Good idea, I've taken 20x 40" styrofoam insulation boards from the hardware store for these job. They are cheap and available in up to 4" thickness(at least for us). Since then I even use cutted 8x 8x 4" bricks to lift up single plants which can not keep up with the others. But of course that's not possible with plants in trays, lol! But they are sturdy and durable and would carry a 30-40gal. tray with ease.