Oh, just remembered. Been feeding them doses of carbon dioxide, courtesy of my sis-in-law. Mentioned to her a few months back that I needed some yeast. So she comes over with some stuff, including a Costco yeast. I told there was enough yeast I could bake three loaves of bread every day and have some left over after the expiry date. So I kept it. And decided to share the yeast with my cannabis plants.
So I start what is called a 'sponge' - any family back in the day of baking had these sponges, or starters as some call them, added to them and also took from the sponge to start bread for the day. I place this sponge in the tent, but not totally covered and definitely not a cool or dark place either. So it dries out after a couple of days, but I have all this yeast..............