I use hortilux with my grows and all is simple and fine. Most major growers (20 Plants +) use just plain HPS for growing and flowering. You might be able to get better results from using first MH during veg then HPS for flower, but I love the one bulb fits all solution in the hortilux. My understanding is that the MH conversion bulbs do not use the maximum wattage provided by the HPS ballest. One bulb for one complete grow is geat.

BHG
betterhomesandgarden Reviewed by betterhomesandgarden on . combo or hortilux hey, i hear how every1 says hortilux bulbs are the shit, and if u run just hps to use one of those. But wouldnt it be more sufficient to have a mh conversion bulb for veg and just a sylvania bulb for the more orangish spectrum in flowering? I think that these 2 would run u about the same price as 1 hortilux so wouldn't the light spectrums line up better with veg and flower than just using an hps hortilux the whole way thorough and through? just a few thoughts.. Rating: 5