Dual Spectrum HPS Bulbs

These dual spectrum HPS bulbs have a higher lumen output than most. This will give you an intense light that should give you visible improvements.   Overview 250w HPS Dual Spectrum Bulb Lamp Type: High Pressure Sodium Watts: 250 Rated Life: 24000 Hours Initial Lumens: 32000 Lumen Efficacy 127.5 lm/W Colour Temp. (K) 2017 Colour rendering index 20.9 PAR (umol/W) 1.8 PPF (Umol/s) 450 Overview 400w HPS Dual Spectrum Bulb Lamp Type: High Pressure Sodium Watts: 400 Rated Life: 24000 Hours Initial Lumens: 55000 Lumen Efficacy 33.4 lm/W Colour Temp. (K) 2056 Colour rendering index 21 PAR (umol/W) 1.75 PPF (Umol/s) 700 Overview 600w HPS Dual Spectrum Bulb Lamp Type: High Pressure Sodium Watts: 600 Rated Life: 24000 Hours Initial Lumens: 90000 Lumen Efficacy 148.9 lm/W Colour Temp. (K) 2098 Colour rendering index 13.4 PAR (umol/W) 1.91 PPF (Umol/s) 1150   Depending on availabilty these may be substituted for another make of hps bulb Please leave this field empty THE INDOOR GROW BIBLE! Enter your email below to receive the download link directly to your inbox! Your email address will be used solely for sending you the download link and occasional updates. We respect your privacy. Check your inbox or spam folder to get the download link