I use Coco in hempy buckets. It absolutely works. 3 gallon would be good enough. I'm using 2.5 liter buckets and they got much larger than I had imagined. I have to feed daily though. Even when I used straight perlite in 3 gallon hempy buckets I fed daily.
Ya, me and my girlfriend like to go to music festivals on occation so I'm trying to find a hempy method where I only have to water every two to three days. I'm guessing a larger reservoir would help with that? Sent from my LGMP260 using Tapatalk