I've spent my morning re reading the beginning of this post.It's a bit daunting and I want start building , so i'm gonna dump some questions on ya.there are a couple of pics of buds with a phone.I noticed an overflow hole near the top, but its not mentioned in posts.I guess my question is are you just saturating the medium, no measuring to worry about?The tubs that I'm going to use can fit rows of 3 hempys with little space between 2ltrs. None of the pics have a lot of space between 2ltrs. , so I didn't think it would be a big deal ,but you never knw?I've been using a mix of 45% vermiculite ,45% perlite , and 10% worm casings in my vegetable garden for about ten yrs. and I like it ,so that's whats going in my hempys.besides that the hydro store is 30 miles from my house.I use coarse gound verm.I use to use fine , but there isn't much difference between it and coarse.Coarse is easier to come by. Anyway , moby mentioned re using the perlite , how the hell do you separate them?I got some magic beans from barneyfarm , critical kush and L.S.D. , anyone ever try these? And finally , moby , did you ever build that doomsday device?Should I be on the lookout for Slim Pickens?sorry i'm so long winded.