Sorry it's taken so long for me to reply I'm doing all this on my iphone 5 and I'm long winded when I type. Ok let me see if I can get it all out.
Do you find you get a noticably stronger terpene expression with this method of layering raziel? I find I get different expressions in the HB soil than I do in the hempies but not enough difference with most of the chemovars I grow to matter to me. I usually grow them all in both mediums. They're potent in either mix.
Hey Sue thanks for your replies and questions,
I'm a maverick, I started in DWC moved to RDWC researched the undercurrent system and made a modified bio undercurrent system. loved the way hydro grew but it was too work intensive. The bio-undercurrent system was great once everything was setup I didn't have all the concerns that come with regular active hydro systems. Had a fire at the house, not due to my setups, firemen told the Leos who then told me to knock off my grows, (only had 2 seedlings going at the time), live in the gateway to the west. whew that was 2 yrs ago took some time off did some researched for a simpler system. I wanted something that would give results like hydro but not all the fuss I came across Hempy, I liked what I read but was concerned about the terpene profiles it would produce, so....
I said why can't you use soil for the added benefits that bio provides, there was "NO" hempy headquarters around back then when I was going all the research so I said why not try it anyway so I did. this was back in '16 fast forward to today and I'll try to get everything answered before my eyes and fingers revolt.
Never tried straight perlite or coco, I've always layered like this from the beginning, I believe I was trying to recreate a bio - undercurrent system that was "passive" like the hempy buckets. Like you, I find that they're as potent and the yield have been the same in all the systems that I've used so far.
hmmm.... 5gal bucket with layers.... interesting.
Are you feeding this configuration any nutrient mix or are they getting everything from the soil?
Can you form a comparison of the grows (standard perlite vs soil layering) and share those words with us?
What was your nutrient regime in perlite only?
Sorry for all the queries... it's new to me so I gotta poke at it forever and form my own ideas to see if I wanna jump in.
Hey Tead, no problem, feedback and general convo is always welcomed thanks for dropping me a line,
Alot of what you asked about I think I answered when I answered Sue, but here's the rest. "OLD" GH Flora series 3 part, open sesame, beastie bloom, cha ching, cal/mag (cause I'm a led man), just the standard hydro nutrients. And I said old because this was the stuff that survived the fire.
My girls are getting food from both sources, soil when the roots are young and haven't yet hit the rez and both after they do. What I think is that the soil also acts as a buffer and provides bio action in the mix, I don't have any scientific proof that this is happening other than the fact that I don't have to Ph or ppm check my pre-water or runoff more than once at the beginning of a grow. I pretty much just follow the instructions for each stage of my grows.
There are pic's under the link that says current grow in my sig at the bottom, that shows my hempy setup and the other link shows the bio-undercurrent system I had before the fire.
I have 2 girls going now in my Hempy setup, Barney farms Acapulco Gold, and World of Seeds Afghan Kush, they are two weeks post 12/12 flip. My kush is standing tall at 52" and my gold comes in at 44" but I fluxed her. Hopefully they have past their stretch cause kush is about 8" from my lights and they're at the top of the tent already.
Hope this helps.
If I had all the materials on hand I'd have set one up like that. 
