FGI 10 Ace of Spades Premium Large Mushroom Spawn Grow Bags - Thickest 8mil - Self Healing Injection Port - Double Wall - Resists Breakage - 20"x 8"x5"

Fine quality mycelium grow bags; air exchange and inoculation port check out, visually – I won’t be actually putting these bags into use for a while, and I don’t know about the 2 microns standard because I don’t have a scanning electron microscope, and I can’t shrink myself to 2 microns high (fyi I’m growing culinary mushrooms). Thicker poly material than the liquid fungi bags I have used in the past, a plus. A particularly good injection port design? I expect so. Of course, the proof is in the product. So, I’ll check in again in September if I find trouble.

These held up just fine in my pressure cooker and successfully colonized and fruited. Very nice.

These bags are much thicker than the average grow bag. These bags are tough enough for reuse however my sealing method doesn’t allow for reuse. These bags are thick enough to where an accidental puncture at any part of the mushroom spawn maturation process is highly unlikely. These bags have easy to inject injection ports.

I've been growing mushrooms in bags for a while now and these seem as nice and any I have used. I don't have a need for the injection port so I can't speak to how well that works.

I've been growing mushrooms for my own personal use for the last 2 years and these bags are a great way to do small batches that I can inoculate and grow when I need to. The self healing port is a great way to prevent contamination and the individual bags allow me to control how many flushes I'll be harvesting and when. For the hobby grower these are a great investment and also work great for selling your own grow kits to others.

These bags come with self healing port which eliminate the need for tape. The bags are reasonable size for a decent mushroom harvest. They are thick with air filter port for steady airflow. I've recently got into mycology and this helps me create and store my own substrates without having to buy pre-made bags