... pressure principle for fertilize, Firstly dilute the fertilizer into the tank, adjust the valve, make a certain pressure, let the ... driectly to the crop root, reduce waste.Our Fertilizer tank can be use for micro-spray,drip irrigation, infiltrating ... for sandiness water filter, can sperate sand and stone from water, Efficiency: 60-150mesh sand, seperate 92%-98%. fertilizer tank for irrigation ...