Used only one season on a hydroponic strawberrie opperation, has the ph controller set up with circulation pump to a mix tank, and a vfd for the feed pump, controll your volume and presure. This is a fully automated program for your nutrients sulutions and water times and walk away, this system is capable of water 32 different zones, and can be easily modified to accommodate different nutrient recipes to different zones! This is quite a machine! If your not familiar with this set up, do some research and you'll see what it cost! If you are looking for a great deal, here it is!! Tire kickers move on, I will reply to a serious conversation.