Shotgun Fruiting Chamber
The most effective FC for PF tek grows, I always keep one around for testing cultures on BRF cakes.
It's simply a rectangular tub with a clear lid and 1/8" holes drilled every 2" on all six sides. Perlite maintains humidity, misting and fanning provide FAE and moisture control.
Operates using the heat generated by your cakes to draw air up from below the tub through five inches of wet perlite.
Pros: Great airflow, no messy condensation, no electrical parts to fail or malfunction, effortlessly holds 95% RH, easy to troubleshoot, gives you complete moisture level control.
Cons: Time consuming to drill tubs, needs to be at least half filled with cakes to generate enough airflow for 95% RH, needs to be kept in a room with at least 30% RH to function correctly.
Materials needed:
-Rectangular plastic tub, can be completely clear but at least needs a clear, locking lid.
-Drill
-1/8" drill bit
-Perlite
-Strainer
-Spray bottle with fine mist
-Something to elevate tub off of the table (bricks, milk crates, etc.) Alternately, you can use wire shelves and not worry about it.
Three simple steps:
1) Drill six sides of the tub.
To allow proper airflow, you'll need to drill 1/8" holes every 2" on all six sides. If you like precision, measure them out; if not, estimate. No need for exact precision.