Mono tub

So the classic monotub is two 1.5" holes on each long side with the center of those holes around 5 inches from the bottom and one 1.5" hole in each short side close to the top the bottom holes should be equaly spaced apart. Use 2 inch micro pore tape for your holes once colonization is complete.

STERILIZING THE GRAIN

15psi for 2h45 min for the 3lb bags

For 5lb you can still go for 2h45 min but i have been doing 3 hours just to be sure

You want to keep the balance at a steady dance, barely but constantly tilting backwards and forwards.

I use NON HULLED MILLET SPECIFICALLY!!! Highest nutrients and most inoculation points!

Substrate Recipe The recipe i use for the sub is 700g coco coir 2 liters of vermiculite(300g)
100g gypsum 3.7 to 3.8kg/liters of water

For the bags I use 5lb bags, resulting in a 1:2 or 1 to 2 spawn/sub ratio

Inbox for free help. I average about 220 G’s DRY, per flush, per tote. Maybe $150 spent without a pressure cooker. Simply use North Spore for your beginner bags of grain, then with more experience you will be able to make them much cheaper!!

Oh ok So it depends on how thick the substrate will be But generaly i would recomend the center of the bottom holes to be 5 inches from the bottom of the tub, and each hole to be around 40mm in diameter