The data are in!
Weight in grams of flowers removed from plants one through nine.
81
128
70
99
66
59
48
97
64
I drew this plot up displaying yield as a percentage of total trial yield in an attempt to back out the impact of nine plants in a 4 X 4 foot space.
Soil details are on page two:
All are being watered with microbial alfalfa tea while in flower.
Immediate observations:
Soil #2 is my present
ProMix based blend and it looks good.
Soil #1 makes local dirt look like poison.
Soil #3 Coco is better than #1 because it did as well with a less ideal lighting position.
Soil #4 is a Peace of mind refurb should have done better having such a great light position but it is the best refurb.
#5  just didn't hold up their end.
#7 Three little Birds did not sing.
#8	 look promising for replacing guano with rock phosphate but I need to keep the blood meal levels up.
Conclusions:
Play with Peace of Mind refurb to optimize additions.
Play with blood meal levels.
Play with rock phosphate replacing high P guano.
Have a bigger room so that light variation is not such an issue.
The remainder of the room came through nicely yielding nice flowers and seeds from seedlings and cuts.
The addition of the one 400 W HPS to normal room power use threw my environment out of wack.
Had to put a window AC into a plastic wall vented into the basement to get the humidity under control.
It was noisy and expensive, but it worked.
With that light gone I'm back in the zone and the AC is now quiet.
Smoke report if I notice anything.
They all smell and look just like I expect ARC to be. Nice.