Best product for seed germination

If i cant get Shunshine #3 for seed germination … what is a good mixture that i can mix myself? Larry

I just use sand.

I have been using Miracle Grow organic potting soil screened through a 3/16" mesh. However, I steam sterilize it (2 hours in the oven at 220 degrees F) before use to get rid of mite eggs and mold spores. I highly recommend doing this with any germination medium but for sure with this one. Also, once your seeds germinate commence fertilizing with a soluble fertilize, the organic medium is insufficient in available nutrients.