Ok so, if I were to go the DIY route and buy 2 18 gallon plants and grow 2 large plants, I would be able to grow larger plants and save some money, and get more yield.
Would I be able to grow 4 large plants with a 600w and get a decent yield?
And for the hydro system, I guess it would be best to get separate pumps for each tub.
Can someone recommend me a good 600w ballast or ballast kit thats not expensive?
How many gallons of water would a 5ft plant need?