i recently split my 4000w hps ebb and gro 48 pot system into two separate ops. one is in the sticks and the only water is well water which is high in iron. i dont k now what else is in it but the ppm is 300 and i need to know how and where to obtain a water test kit to find what is in the water? any suggestions
as to the test kit, and ways around buying a reverse osmosis.

Finding out is not going to do much good. You know you need the filter, if not R/O then one to bring it down.

Are other plants watered with the same water and how they doing ? Is always a good test. Maybe hard water nutes ?