FSS isnt eligible for Prime. it ships for free in 3-5 business days. Fishtown USA, kissena aquarium and pacific sell this locally. http://www.amazon.com/Hagen-12685-Fl...hrimp+strattum
If you are new to shrimp keeping, this substrate can used immediately however the enzymes and biofilm necessary to support shrimp will require several weeks to develop. I am not referring to the beneficial bacteria of your traditional fish tank, which of course needs to cycle in due course to process waste. Anyway, I digress. Search online and you'll likely find many places for this substrate.