So I suppose the first thing to do is to separate the intake from the humidification, which is a good idea for a number of reasons. When you do this you can also throw in a second exit or exhaust damper next to the exhaust fan that allows the incoming air pressure from the humidifier barrel to take the path of least resistance out the exhaust damper...simply put more more exhaust ports equal less positive pressure...we were just talking about making a conceptual model for a deep dive on this exact topic so keep an eye out for that.

Stu Hartley No worries! There is an A patch equivalent via Sakato (Japanese bags) have you tried them before? I have seen a lot of chinese bags come through the industry with varying degrees of consistency in their patches despite what they boast...Can you force air through the patch of a sealed bag by squeezing it? IF so that's too much gas exchange for Maitake...IF not I would double check your hydration equation to make sure there is enough moisture in your sub.

Cultures have returned! Gregors getting some mycelium onto terrestrial dishes to see how viable they are...so far they are looking good! This was a different mission than workmans, I have to touch base with him about that...lots of hype on space shrooms these days which is fucking exciting!

Hell yea!!! Looks fantastic, gotta love first lab builds, I remember my first closet lab, door was a sheet of painters plastic taped to the closet frame with that adhesive zipper from home depot! Mega Congrats!

Stu Hartley what kind of substrate are you using? havent seen any drying on our maitake blocks, even through invitro-fruiting. Maybe run a trial next to a unicorn XLS-A and see if the patch is the issue?

https://clevelandequipment.com/mwdownloads/download/link/id/140?srsltid=AfmBOooLMrdw-dmbk2GgiSBxG2kwiO7BHcM3irGI6zQ0eqWhOcETjDlq

This is the one i suggest, they do have cheaper ones but they have their respective issues with even seals and cycles and speed and such

There is a chinese one...Ill find the link shortly and post it here:

30% is just what they claim to go down to but it certainly gets them down to bone-ass-dry. It certainly gets them down to the point at which they are preservable and retain minimal moisture. We have been doing tests to see if any molds or anything can grow but so far so good.

Definitely share the paper amigo! We would love to see it. GateKeepers be damned!