I thought about that, but I try make habit not to throw anything that has to do with growing/cannabis etc... into garbage, instead I usually burn everything... then recycle that into ash to the garden
I'll just have make out of state metal scrap dump... Oh ducks one last thing you plan use CO2 or you won't need use that? I keep hoping someone will make inserts so we can re-use the filter, It wouldn't be hard to design an insert that can slip in or out...Instead filling landfills and scrap yard with used filters...