@Four20, I'm not using the TS600 at the moment, but I will be shortly in the 24x24. I'm using the TS1000 in the 28x28 at the moment and I'm growing in Stepwell Super Soil with Nature's Pride Veg & Bloom top dressings. Also planning on compost teas and Miicrobial Mass waterings. 👍 thanks for the support brother!