What size HPS light?..cool tube or reflector glass-inclosed?

6 inches seems very close?
Dutch Pimp Reviewed by Dutch Pimp on . Please help! TS form included C=Answer if you grow coco E= EVERYONE needs to answer lol! E-indoor E-coco E-specific medium: coco/perlite CSL-Soil type/brand: Readygro Moisture formula SCL-Anything you have added to the soil: none SCLR-Soil or slab runoff pH: 6.5 Rating: 5