i agree i never resuse, (but I am not using 20lb pots) but it can be done. u would have to flush the soil really well to make sure any salt build up was removed & then of course u would have to make sure u could ph the soil back to ur close to 7ph will proper addition of nutes or organic matter to again re-energize it. I would suggest using ur soil WITH new additives that u would mix in to make it fresh again.
Soil can be recycled. Usually people who recycle their soil load it up into a tote with various other organic amendments and trim from the previous grow, kitchen scraps, etc. and some earthworms and let that all decompose/cook for a month or so. That's what organics is about, really.
Soil can be recycled. Usually people who recycle their soil load it up into a tote with various other organic amendments and trim from the previous grow, kitchen scraps, etc. and some earthworms and let that all decompose/cook for a month or so. That's what organics is about, really.