Itâ??s just an enhanced spectrum bulb. Like grow enhancers for vegetation and flowering. Many many others factors play their part in the growth cycle.

The bulb you are talking about is a Super horizontal or super base up metal halide bulb.

The Enhanced Spectrum H.P.S. Bulbs have both colors and work from start to finish one bulb one transformer.
Zandor Reviewed by Zandor on . Hortilux bulb worth it? As the title says, is it worth the extra cash? Or will the stock one work fine. insidesun bulbs. Rating: 5