Sh...t i just wrote for 10 minutes and the whole post got deleted before i finished.OK now the short version.Kochad said ive seen a few people using the cmh bulbs and ive yet to see where the benifits overrun the price of the bulb.
if you are having resin production problems why not spend that $100+ that people buy cmh bulbs with on some better genes to make the resin that you are looking for?
until someone shows me different with results, im going to stand by the tried and true methods.They are $51.00 for a 400watt &$51.00 For a 250watt.Yota its not a hps,it jiust run in one it called re-tro fit,so people with just a hps ballast can use this bulb for veg.They last way longer then hps or mh,and have a better/wider spectrum.Please look in,Grow Room Designs & set ups:Look for the post called HPS,MH, CERAMIC METAL HALIDE BEASTS THEM ALL, byThat One Dude,you WILL see why these bulbs are so great(Plant pics,plese look!)After you read that thread plese come back and post,thanks,ronbud.