Quote Originally Posted by NatureLady View Post
Here is a question I have...Instead of buying eggcrate could one use larger (smooth river) rocks as the drainage layer then cover with the screening to keep the coco fiber out of the water?
Sure. This would be like the leca/hydroballs/hydroton approach but with rocks (the rocks will be heavier). I'm a fan of landscape fabric ('weed barrier') instead of window screening to keep the substrate from the drainage layer as it's nicer to work into funny shapes if needed, but screening works as well.

Make sure to test your new acquisition holds water before construction.

Great price by the way, nice find.