Hey Texastiger, I've done soil, soil-less (promix-perlite) and this time hempy buckets. I have the most experience with promix-perlite, and although I've yet to complete my hempy run I can tell you there's no going back to soil-less. My closet is overflowing with the biggest, bushiest plants I've ever had. I use two gallon buckets, which I got at a dollar store for $2 apiece, with three parts coco coir and one part perlite above the reservoir, and Grodan rockwool pieces in the bottom. The plants are three weeks into flower, and right now I give them nutes every three days (although I can soon seeing it being every second day). Hopefully I'm done with the stretch, because my lights are as high as they will go and the plants are within inches of the lights. It's such a simple method, and right now I'm betting I double my output from growing in promix-perlite. Most of what I learned -- and there really isn't a lot -- you can find in this gentleman's thread right
here on RIU.