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  Find Switchable Ballast fixtures. These switchable light ballast fixtures allow using either a metal halide or a high pressure sodium lamp. To change from one type of lamp to the other, insert the appropriate lamp and set the switch. This enables growers to use the proper spectrums for vegetable growth (MH) and flowering (HPS) with a simple to use switch. Choose a switchable ballast here.

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Switchable HPS/ MH Ballasts
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