A fertigator is also sometimes refereed to as the “Heart Beat of the Greenhouse”. Fertigators are versatile machines that bring precision nutrient and acid control to professional growers. They are used to mix the nutrients and acids to feed the plants. Additionally, an automated dosing feature allows growers to optimize growth without spending half the time measuring, mixing and dosing. Here is an example of one from FarmTek
(http://www.farmtek.com/farm/supplies/prod;10001;hydroponic;pg113709_113710.html)
What is your experience with your system?