I switched from propane to tank gas and bought a hydrofarm regulator kit....it sucks. the selenoid works intermittantly; it will work fine for a few cycles then it will stick on...won't turn off letting the tank drain and flood the room with dangerous amounts of co2....not good. For $150 you can screw your whole garden if you're not careful...hey thanks hydro farm!

The part of the selenoid where the cord attaches is plastic and has stripped threads right out of the box as well.

If you are in the market for a co2 regulator kit I would avoid hydrofarm...

The moan zone ... thanks for letting me vent and warn others...