one thing to note, if you are talking probe and pulse start a probe ballast will not start a pulse bulb, but a pulse ballast will start either.
also a thing to not usaly a pulse start ballast is only 15 bucks or so more than a probe type, by spending the extra money one a pulse start ballastt you will extend your usefull bulb life as it is kinder to the bulb with this method of starting.
so spend the extra couple bucks and get a pulse start. (Oh and for thoes that might wonder an HQI ballast is a pulse start type also. a little more bucks again but the best bang for your tank out of the 3)
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
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