If you have a hydro shop anywhere nearby I ditch those cubes and go for some rapid rooters or some Coco plugs. The Coco plugs that have a little bit of nutrients in them and work so much better than those grodan or those rockwool.
If you go straight into Fox Farm soil that's bit too hot you could mix your soil and layer it with something like Happy Frog if you have that in your area.
Is that really necessary to layer the soil , I was hoping to not buy any soil till second grow or even 3rd. Happy frog by fox farm ? Will the "hot" soil kill the plant or just won't grow as fast ?
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