This is by far the best bought bulk substrate I've had the pleasure of growing/experimenting with....

I was a scholarship student with a well-known and widely respected spawn making program and this...

Good product my only gripe is they don't have self healing injection points or a double layered...

very fast shipping will use this company again for sure

Great product works great for my grain jars. Will buy from again.

Im going to go with these over the regular filter disks in the future. They are obviously much...