Hello gents, I'm still having issues with my new Led adventure and wanted to point out a few things I've been trying and noticing reproducible. The summary is when I put my plants under the Led light I built the leaves start to turn yellow over time but under the hps they start to green up. I have a older thread here that has a lot of details but basically what I found out after transplanting and trying a few different ferts including scotts slow release granules is that I don't think it's a fert issue or a too much issues as the slow release works great under the hps. The pictures I have are plants in miracle grow soil mix with a little of the ocomote slow release fert, they looked great about 10 days ago , nice and lush green , when I pulled them from under the hps and put them under the led light. After a week or maybe two the leaves will start to lighten up as you can see and if I continue to keep them under the led light they eventually become yellow. This is repeatable over and over again..under the hps they thrive but under the led they yellow out and get sick. In the beginning it looks like a nute deficiency but end stages it looks like bad fert burn ...but again same everything under my hps they do well. I'm thinking this is light burn and it eventually gets worse and worse as it bleaches out the chlorophyll. I bought a Lux meter to compare the hps to the led but then found out you can't really measure led/s with a lux meter very accurately but might be able to get into the ballpark. I'm running 9x 2Ft Bridgelux EB Gen2 3500K led strips on a foot print of 24" W 18" deep. The driver is a HLG-185H-c1050 hooked up to a killawatt so I can measure wattage. They seem to get burned with only 130W - 150W and a lux reading of 20000 -- 22000K via the dr lux meter. The led lights are about 3 ft up from the canopy; the hps would be a 400w about 3 ft above as well for a comparison. The environmentals 77-82F with 35 to 45% humidity. I've grown a few times with decent success but always used hps for hempy and DWC and didn't have this issue. Has others experienced this coming from hps going to Led strips? Again these plants I'm attaching looked good just 5 or six days ago and I noticed the tops starting to get lighting going on again. Is this light burn? Are we supposed to use calmag with leds or is this a myth? Does anybody have lux readings they can share for veg and flower, maybe one day I can get a par meter.