Since I am running chow, 75% hydroton, and rocking a bucket system these days, I am doing 6-7 gals of media per 27 gal tote or so.
Solves my coco problems. I will be disposing of around 24 gallons of coco per run. I can live with that. I have all the coco I need sitting there ready to go from the last time I rinsed the shit out of and baked my coco that I de-bricked. One day of work and I have enough coco for like a year the way I do things.
Bucket systems are not for everybody, but my dtw chow swc gig is 100% reliable, is very high performance for growth rates, allows usage of teas and organic amendments, and has healthy white roots despite tolerating irrigation temps of up to 77 degrees, and swc water temps in the totes of 78 degrees this one time I checked on the hottest day in there so far.
Let's see if I can go another 30 days with healthy white roots, I think I can.
I had to fuck with 300 gallons of media for the 12 27 gal totes while really sick. Though I am doing much better and can handle way more physical exertion, I am pretty unenthusiastic about the idea of ever having to handle 300 gallons of media in order to turn a room over.
This way I will have 1 27 gal tote of coco to dispose of. I could just spread that outside if I wanted. Pretty easy. Perlite mixed into the coco is a dead giveaway, don't want that again. Clay pellets can of course be reused.