be carefull with the water farms, especcially if you are using the master control resevoir to feed the individual containers/farms.
The master resevoir will have your nutes and ph set just perfect, but he individual farms will pull out mostly water and leave the nutes in there and as the master controll resevoir keeps adding to the containers as the water goes down in each individual farm, it doesnt mean that you are putting in your perfect premixed and calibrated solution.
Check your individual farms everyday to make sure your ph and ppm are correct.
I learned this the hard way on my first grow with them. My ppm was set at 1200 in the master resevoir and the individual farms were way way higher (over 3000)..
good luck,, have fun