the sub.........
we use WBR and /OR RGS in various combos or as stand alones.
we also use common ferts mostly in the 5-5-5 to 20-20- 20 ranges.
i will endorse no particular brand . most common store ferts work.
one asks why?
decades ago, i hunted wild cubes thru the tropics.
ive been to alot of cow and horse fields.
peeps see grass , horse cows and fences and turds.
whats never seen is the urine. its not noticed
active pastures are urine soaked.
as urine dries it heavily nitrates the environment.
cubes clearly like massive nitrates.
in the mid 80's we got the idea to start soaking cultures/ agar etc,
in various common NPK ferts,.........
our method is pretty simple, we mix the ferts as directed mixed with water.
we then use that water as a base , for hydrating grains, and agar.
so the whole process is essentially 10-10-10 NPK infused.
i offer the info as a disclaimer mostly.
i make no claims other than we have been playing with ferts and cultures for like 30 yrs.
all my work shown uses it to some degree.
anything ive ever presented on the topic, includes the " results" in an obvious pic.
( to us its a "typical" MS grow as weve used these methods or variants for decades.)
i would suggest those seriously interested try it themselves.
OR see the huge " violet tek" series ( google) for other fine details and testing.
violet details our theory on ferts best, and the reasons why use them .
as for RH environment?
standard room, whole HEPA
and we use 33 gal and 55 gal HDPE cargo containers.
plastic PP5 cups are stacked inside
with a gentle daily mist and bottom watering , and 2x daily fresh air,
along with a blast of LED 450 NM .
seriously , that IS the total environment.
avg temp 80 degrees.
this can be scaled.
im always humored when peeps think you need one million cups for this.
i present 1/2 dozen, or ,one mere AA 910 cooker load.
when one scans grow forums, one will see a great deal of grow drama,
along with devices, machines , humidifiers, automation, ,ducting ,fish pumps,
fish heaters, verm ,perle , stop ,drop, dunk , DEC and roll on a foil device,
and, bake at 360 / 12/12 / 6500 k arrays of tube lights..........
^
thats not annie.
were seed ,ferts ,water , plastic cups and heavy duty plastic totes.
we fast PC , we innoc with screw drivers, never shake, and case with potting soil.
oh and a misting bottle, and we casual wave LED blue at them.
we are that simple...............and we like alot of pics.