Its only on that 1 plant 2 tops... check out how close the lights were... there about 12''-16'' from canopy(now there 2') and they are 1000w.... I think the burn was coming from the light being to close to the plants... but i thought if the lights are aircooled then they can pretty much be as close as they want? never had this happen before... thank god its only that one bud. you can also see the burn in the canopy picture below, under the first light on the left.
also the temp in this room has been dropping to around 50 degrees during sleep cycle so maybe the low temps and the intense heat from the lights when they first come on is what burned that top?
anyone ever had this problem?