Originally Posted by Wet_Boots
What are your backflow regulations where you are working? If you don't have a state-wide set of rules, you may have some headaches doing fertilizer injection.
Reduced-Pressure backflow assemblies are mandatory for injection. I had heard of a organic fertilizer than was somehow spun as to be able to be applied to drip without the clogging, but R.P.s would still be called-for. I like the idea of injection.