yea i would deff. ask him, i would jsut put it in its own bucket or somethin, i belive he only watered the coco once a day or every other day, it was like soil but has alot of air in the medium. I would stick with soil or soil like coco with alot of airation in the roots with low maintenance. no hydro they grow fast and are high maintenece and over time fluctuate conditions. ahhh i just read ur ful post crisp, um yeah that would work pretty well but the roots grow down into that bottom part dont they, wouldnt u be using alot less coco it would only be in the top half, i would get a nice size bucket, layer the bottom with hydroton, and then put all coco in, make sure it has holes at the bottom obvously, and just time how long it takes to water and have your pump turn off, have it turn on when it gets dry.