Injectors are based on flow rate. There are much cheaper siphon injectors, if your flow rate is high enough. My high tunnel drip tape used about 1.5 GPM. That was right on the verge of being enough flow rate to work, if I hung the bucket of fertilizer a few feet off the ground.
Hydroponics is cheaper than using an injector, at least on a small scale. There are many hydro methods that work. It is important to be able to keep the reservoir water cool. Someone posted on here a nice system made from 5" vinyl post covers. If you google "aeroflow" from General Hydroponics, the post cover setup mimics that machine.
|