Set up a system like that with stuff all at the hydro store for under 300. It was 8 5 gallon buckets, large air stones, lids with net pots on them already, and a 8 site pump, + the hydroton medium. Then all you would need is lights and clones. Also sell nicer versions with reservoirs and control buckets and drip feeds and various other things to help out. Or you could build your own with supplies you go find but at least go t oa hydro shop to see the pre made stuff at least for a good idea. For evan a smaller space you can take large rubbermaid containers, cut 4 - 6 holes in the lid, put small net pots in those holes and have air stones in the rubbermaid so its multiple plants but only one system to maintain... but... if you're not using clones and the roots get tangled once you find a male and you kill it the dead root wad gets acidic in the res water and could kill the other plants... but from clone for a little closet grow these work great!
