I am using vermiculite for seed germination.
It is just for germination, and does not contain any nutrients, so
you need to be ready to transplant sprouts to a soil mix.
Or else add dilute fertilizer to keep the sprouts growing.
I find less algae and molds etc. with vermiculite and less damp off too.
It is easier, and cleaner, to use when the kitchen or bathroom becomes the potting shed!
It is especially good for germinating alpines, and other plants which like really good drainage.
