I checked out the hoods on www.all-glass.com and only their top-of-the-line
Triple Tube Strip-Light and High Output Compact hoods are listed as having
an electronic ballast. Considering they make a big deal about the benefits
of electronic ballast with these models and nothing is said on any of the
other models, its a damn good bet that only those models have electronic
ballasts.

Near certainty that your ballasts are magnetic.
E.Otter