[rain dart]

So this might be a silly question but, so i was at the $ store the have those rubber drawer mats, to keep things from sliding around, I was wondering if I could use that instead of screen to cover the hydro balls. It has small holes for drainage, but need others advice. Thx

*or mesh netting?

 

[Dizzle21]

not sure if it would rot or leach toxins into substrate best to stick with fiberglass mesh (window screen). its tried and true, only about $4 for a roll at home depot

 

[WeeNe858]

Those rolls should be inert but the holes might let the substrate fall though over time. I also recommend the screen.