I am helping a friend get set up and he wants something that will take up minimal space and produce. I'm thinking vert. any vert gurus out there that can either post links or pics of vert hydro systems. he will be running rockwool and loves the NFT system I built him last time. I was thinking of building a tiered NFT stadium, but I want 360 coverage and I can always build a top drip system. I would really appreciate any info or suggestions. thank you!