Many indoor gardeners start out their seedlings under standard fluorescent grow lights. This method works fine as long as the vegetative area you wish to cover does not exceed 3 fixtures and your plants stay under 24 inches tall. Even still, you will not be able to get the most out of your plants without introducing the appropriate amount of light in the blue and red part of the spectrum. Continued below.
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 400W MH Sun System 5 Enclosed Ballast Hydroponics  US $150.00
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 Sunmaster 1000 watt MH Bulb Cool Dx Lamp Metal Halide US $99.95
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 Hortilux 400 Watt Metal Halide Blue 400W MH Grow Bulb US $89.90
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 Eye Hortilux 1000 watt MH Bulb 1000w Lamp Hydroponics US $75.75
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 250 watt MH GROW LIGHT SYSTEM 250w METAL HALIDE w sun US $117.45
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 175 watt MH GROW LIGHT SYSTEM 175w METAL HALIDE w sun US $116.95
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 Agrosun Gold Halide Horizontal HO 250W Grow Bulb MH US $59.95
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 Grow Light Sun System 400w MH ballast blub reflector US $100.00
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 400 WATT MH DIGITAL GROW LIGHT XL HOOD 400w SUN SYSTEM US $136.95
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If you wish to allow your plants to experience the best vegetative growth they can, light in the blue spectrum is what is needed. Thick and stocky plants capable of bearing more fruit and flowers can be achieved by using metal halide grow lights. The blue light emitted by MH grow lights allows for vigorous growth in the vegetative stage - just be sure to provide adequate airflow and strict temperature control to compensate for the heat output by this high intensity bulb.
