LOVE the Stonington Blend!!! I did some videos for Coast of Maine, last year, while doing prototype testing on the Stonington Blend
I think if you go to their website, they them in their playlist. Great company, and GREAT soil engineering! (Their Lobster Compost and Kelp Meal blend, fert, is Dynamite to amend a veg garden, too)
Note from experience: The Stonington is Hella-Hot soil!! I highly recommend planting your seeds in a light mix and transplant them once they have a couple leaf sets