ive heard a 3 to 1 ratio is good
detroitfish Reviewed by detroitfish on . Question About Optimal Light Spectrum I received an AgroMax 400 watt, 55,000 lumen output bulb with ballast and reflector. I'm using it to replace a fixture with six 24 watt, 1600 lumen, 2700K spectrum CFLs. I also have two side fixtures with 10 2700k CFLs each. The HPS light I just got is designed to output 30% additional blue light (according to the box and the website). What I've been reading is that red spectrum light is better for the flowering stage and blue spectrum is better for the vegetative stage. I'm Rating: 5