Thanks dude,I am not here to fight,just going to do a test grow, with a light I got from my local hydroponic store,I have no affiliation with these lights and will give an honest opinion of my results.
The hlg 550s that I have are not ul listed here in Canada as of yet ,I guess that’s why the shop here in town doesn’t carry them anymore..listen I love these qbs,I have shown pics of them all over the RIU and Icmag they give good results but this light is only 1-1/2 yrs old, same thing happened to my buddy,he had two, one died within 8 months. Maybe it’s a Canadian thing..lol