Hello everyone!

I’m on my third attempt at a Monotub. First time I didn’t have enough moisture and I opened it to add some and got contaminated. The second time my grain bags weren’t colonized properly but I decided to give it a whirl anyway and it ended up being contaminated. Now this.

I used a nocbox, sprayed everything liberally with alcohol, and had beautifully colonized grain bags of Jack Frost. I thought this was going to be it!

I started this tub the week before Christmas. I mixed one grain bag fully with 2 bags of Substrate of the Gods and then put a thin 1/2” layer over top of just substrate. It did get pretty cold for a period of time where I am so I now have a heater near it but I am starting to see the same contam I got the first time. It has circular pattern to it. I tried capturing it in a picture.

This is getting super frustrating, I have another grain bag ready to go. I’m not sure what I’m doing wrong