Marc
21-01-2020
Fantastic bag! However could you specify what is the filter pore size? 0,5um or 0,2um thanxxxx
Alchimia Grow Shop
29-01-2020
Hi Marc, thanks for your question. The manufacturer tells me that the bag has a 0,2µ filter, the perfect size to protect the substrate. I hope that helps, best wishes and happy growing!