I'd like to know any strategy that would help slope. I've seen these plastic divider things used. Not sure what I would use as an equivalent.
Your composition is looking good. Especially with the paper height.
I know the green machine used them, I think there just pvc or acrylic. I plan on using them to prevent the soil from skidding away from the rocks/crevices.
Thank you I can't wait to get this in soil to get more height.