Working my way through this very long thread and decided to jump to the end to ask if anyone has used this specific product: EP Minerals "Floor Dry"
https://www.grainger.com/product/EP-...sorbent-191W88
The tech sheet (link on above page) states that the pH is 6.5. I had seen a few earlier posts mentioning pH being too high but this is slightly acidic so I think (?) it could work for seed starting.
Any advise would be welcome. I usually just use commercial germinating medium for starting seed. Would love to try a DE medium if it reduces damping off/fungus but I also don't want to waste precious seed.
BTW Grainger lists 3 DE-based sorbents (not counting one that is "scented"):
https://www.grainger.com/category/sa...&filters=attrs