might i suggest the sylvania grolux, it has 3,000 more lumens then the hortilux, both great bulbs though

green leaves
Str8jeepin4pack Reviewed by Str8jeepin4pack on . Standard HPS -vs- Hortilux I didn't think i was missing out on all that light until i decided to get a better bulb. The first pic is with the 400w standard HPS (5 months of use). The second pic is the upgraded 400w hortilux. Can you tell the difference? Check your bulbs, might be time for a new one. Happy Growin!!!!!!!!!!!1 :D :D :D Rating: 5