Zentri
Kava Enthusiast
The Aluball claims to be 75 microns and so is their strainer bag. Both allow a lot of sediment .. I've never seen a bag advertised as lower.Maybe the sediment is the problem, makes sense. And I have been Aluballin alot, its just so damned easy,i guess I will stick with 80 micron traditonal prep just to be on the safe side. Thanks Edward.