Roots O Lush?

[CannabisMingus]

Anyone else this soil? Thinking of a water only LoS grow in the fall in 7 Gallon fabric pots. They say 8 weeks so I assume I'll need at least a couple of flower-based top dresses or similar. I would think adding compost to it would be in order.

I've had success with water only with BaS 3.0 but my local shop carries Lush and I really don't feel like paying for shipping soil.

This is in lieu of mixing my own (no more room for materials) so thanks.