The "Hozon" is a mixer that is attached between your watering hose and the faucet. A separate suction tube is then dropped into a bucket of Fertilizer solution. When watering, the solution is then drawn in & diluted and then applied right along with your watering.
Please Note: For the most accurate and predictable mixing, be sure to have only a hose between water source and the Hozon mixer. The use of any additional flow control valves or shut-offs, or less than full water pressure, will slow the water flow and affect the mix ratio received.