Probe And Pulse Start Metal Halide And Hps Compatibility?

[rshackleferd]

I have read and heard different things about metal halide to hps compatibility. I have been told a metal halide bulb will work in a magnetic hps ballast as long as it is the same wattage but an hps bulb will not work in a metal halide system. I have also read that you should only use metal halide conversion bulbs due to the igniter in the hps system, HOWEVER a pulse start metal halide also has an igniter just like an hps bulb, shouldn't it work both ways since each system has an igniter? and since a pulse start metal halide also has an igniter does that mean i don't have to get a conversion bulb to fit into the hps socket?