im wanting to try hydro but scared so i think im gonna go hafses with a wick system 1' deep 9" diamater pot with about 3" of nut 18 18 21 1-2" air and 6 .5" strips of sock leading to the top of the cactus palm and citrus soil on the veg side and probably 15 30 15 on the flower side. but have considered the drip with .5 drippers going to 4 plants feed from150 gph submerged pump into vermiculite and Perlite.