i dont know the npk of the stuff but if you have a strong root system on the clones i dont see why you couldnt put in there, if you are not sure do 1 of the clones if they are the same


from foxfarm faqs
What is the NPK of your soils?

All of our soil products offer balanced nitrogen, phosphorous, and potassium. We pH adjust them to a neutral range of 6.3 â?? 6.8. Because of the premium organic ingredients that we use, there is no risk of burning your plants. Our soils are ready to use, right out of the bag. There is no NPK listed on our soil packages because they are not fertilizers, but growing mediums. The real power of our soils lies in the fact that they are teeming with beneficial micro-organisms. Our soils are never steam sterilized, which allows these microorganisms to thrive and convert the organic nutrients into a form the plant can utilize.

as they say its nonburning