We have an FFU that was installed in a ceiling with its back exposed to an attic, where it was used for a couple years and then not used for 7 years. Is it salvageable?
I was thinking about changing the HEPA filter on it (in addition to changing the pre-filter of course), but it doesn't seem like the FFU is made to be taken not made to be taken apart easily.
What is y'alls' protocol for FFU maintenance and for changing or not the filters?
Do you ever perform a test of the HEPA for leaks?
As always, thanks a ton for the help!

I'm curious what everyone does/recommends..

I would like to follow the recommendation of using the leading edge of plates (as stated on the pheno-flicks) to inoculate masters. However, due to time demands, I have not been able to time my spawn production so that I am ready to transfer when the plate is at the perfect point (the mycelium is 1 or 2 cm from the edge let's say).

In that case, os it better to fridge the plate when it has myceliated maybe half of the plate and then take it out 1 or 2 days before I will transfer it to grain (so that it is active and growing) I can still use the leading edge)?
OR
Is it better to leave it in incubation, and use it even a few days after it has covered the whole plate, but avoid taking from the edges that have a risk of being contaminated?

Really appreciate any inputs, opinions y'all may have.

Just wanted to say how much I have benefited, learned and improved my op from your content, both on the podcasts and the deep dives. It's a pleasure to contribute and I will let others know how much the deep dives are worth it. My knowledge has increased significantly and I have been able to problem solve and prevent future problems. Also came at just the right time as am building a new lab.

Keep doing the good work of contributing to building each other up! 

edit: just saw that there is a deep dive on Lion's Mane. I'm stoked. I will watch and and then revisit my post.

Hey y'all, It's my first time making Lion's Mane grain spawn. With the traditional agar->grain->grain, does it generally grow significantly slower than other strains, like oyster and cinnamon cap.. Mine have been taking at least 14-16 days, whereas the others colonize a grain bag in around 10 days.. What is y'all's average colonization time for LM grain spawn bag? Do you recommend a specific grain/ sawdust configuration for getting it to colonize faster/ better? Does it do better on sawdust spawn maybe?
I appreciate any tips!

I'm super curious about growing Tremella. Just heard on the last episode that Erik tried growing it.. I would love any info on successes/!failures/ lessons learned and any indications.. also, probably the most important, anyone know where I can get a viable strain with a compatible that has been fruited? Since I couldn't yet  find anyone in the US growing yet, I'm thinking I gotta try the Chinese. 

 Erik Lomen mentioned it's association with a bacteria, which is new info to me.. also none of the material I read said anything about growing on pine so that was cool to hear.