Diatomaceous Earth as a seed starting medium

[RayR]

Originally Posted by Rockporter

Thanks Ray, when you say true leaves what do you mean when it is squash or say lettuce? I know that I need at least four leaves for a tomato plant but I don't know about the rest of it.

Squash or Lettuce are dicots, same thing as tomatoes, true leaves emerge in pairs.
Wait for the second set of true leaves to emerge and then think of fertilizing very mildly with your MG. The cotyledons supply all the nutrients the seedling needs until the roots have matured enough to be able to take up nutrients from the water in the medium. Fertilizing too early with a synthetic can damage the young roots, you want healthy white roots, not dead brown roots.