Thank you As. I just got home from buying all the components to make my potting mix. I got the Turface at John Deere Landscaping, Fir bark, gypsum and CRF at Lowe's, and the grit is on order from our local feed store in the correct size. Tue. I will make my first batch. Can't wait to get started. I will post a picture of my first batch next Wed.