How to Find an LED Equivalent Wall Pack to Replace a High Pressure Sodium Wall Pack: Printable Worksheet 1.) Determine the Watta
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Amazon.com: Vegelumax 400W HPS Super Grow Light Bulb,High PAR Enhanced Red and Orange Spectrum,CCT 2100K,Ultra Bright 55,000 Lumens,E39 Base,1pack : Everything Else
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Digilux 400w H.P.S. Digital Bulb (46,000 Lumens) 2000K direct from Growers House
