I bought 4gal of pumice. Price was ok, not great, but had free shipping. Description says sifted at 3/8" but seemed larger than that. I didn't measure as its not that big of a deal - still useable for me. I just prefer a slightly smaller grain. Probably would not buy again, not that it's a bad product, just not for me. Shipping was a little slow. after a few days of ordering I reached out to see if the product had shipped. I received a prompt reply saying that the delay was due to letting the pu...