Thank you Xlr8
Indeed, it's not the most potent I've had, but it is among the stoniest, if that makes any sense at all.
Jock #2 is coming along with some concern. With at least 3 weeks to go, I've discovered a few male "bananas" on a few of the tips, plucking them before they dry. On one branch tip (well, one that I can see anyway) I did not succeed, as I found 2 fat seeds in development. Seeding appears nowhere else (that I can see), nor on any other plants.
I can wrack my brain for hours on theory, physics, real world applications...
I have a phobia of spending so much time plotting & planning, only to choose the least efficient method.
One thing I do note, is the glass on the incoming air side of the the tube is cool to the touch and begins to warm just prior to the middle, and is of course very hot directly under the bulb. In the previous flow direction the tube was still hot on the bulb side, but quite warm through out the rest of the tube & ducting.
As I sit here typing this, I began to theorize the reason for recommended "mogul side" air intake, is to keep the components at the base of the bulb as well as the wiring & socket cooler. The minor temperature drop may come at the price component longevity.
Ack, my brain is hurting. No more thinking, I'll post some pics of JH #1 now...