4 Strains, 2x4, LED grow

It is beginning of Week 4, day 24 since switch to be exact.lol next update will be in a week:) I really hope I will get a true purple pheno with the purple kush's, there is 2 phenos, one short bushy plant that almost died as a seed... fucked up ph.. but that one grew like a true Kush, short, one phat stem,full indica mode.. but I also topped it, maybe a mistake... but she took it, and grew a few big side branches instead... on one picture you can see it already has purple calyx, which does look good indeed... temps are really high at the moment, lights are on at night so not much of a temp diff, a purple plant that purples in warm conditions, with a nice pink or purple color calyx would be so sick.. most only purple the bud leaves... never had real purple plants indoors, well I did purple some due to temps, but that is not the same. only purplish...a purple pheno clone would be super awesome... I've seen maybe one real nice indoor purple Kush grow diary.. seems to be rare. ... I just realized that the Yellowing may really be Lightburn,so I tried to turn down the LED to approx 75%, don't have a Watt-meter, basically my lamp should put out about min. 180 lumens per watt on max power, which means about 70k lumens on full power.. I've read cannabis only takes up to about 85klux, (lumens per m² ?).. on .72m² this would mean i need about 61klux, I also don't have a lux meter.. the whole situation is kind of weird for me, since hps did not have problems like that:) It was more like: more watts, more yield... and maybe a slight yellowing spot directly where the bulb was... I always identified this as heat issues.. It should be ok to run that lamp at a little less I guess ... on full power this would mean that my lights are about 15 percent too strong ... even though it depends on many things.. like lamp height, etc.. I guess75% should be more than enough though, considering it makes the LEDs more efficient about 200 lumens or something.. 300x200lumens=60000lumens... which would be about 85k per m² and about 75 Watt per board instead of rated 120... but it is all just guesswork:) minimal power with the ELG drivers is 0.7 ma, I measured this when I built the light. it goes all the way up to 2.2amps on full power, at 43 volts. The lower growth is also still dark-green. which really hints to light burn issues. oh and I also have thrips and maybe spider mites.. I've ordered some helper critters a week ago (ambi cali's, and phytos) but I think most of them died during hot transport conditions... ordered these because of the thrips and possible spider mites (balcony had infestation) I've spotted one red mite yesterday, and wasn't sure what that exactly was,friend or foe.. saw some suspect marks on the leaves that did not look like thrips damage... but it is only minor infestation with the thrips. also have minor fungus gnat infestation.. which isn't good since I wasn't so sure of the yellowing cause... I watered nematodes a few weeks ago, which helped alot , but they came back now. I've now reordered ambi calis... I am thinking to remove my net cause stretchin is done mostly and defoliate them a bit next... I don't think defoliating is necessary, or even beneficial.. some plants of growers look riddiculous, both in bud size and without leaves:) it just makes buds leafier when people pluck all fan leaves in my opinion... but In my case with 13 crammed plants I am worried about air circulation and leaf transpiration... powder mildew stuff edit: In case somebody is interested, my lamp is made out of a 4mm aluminium plate as heatsink, cut to 100x45cm to fit the 2x4, thickness is just like the newer kingbrite lamps without heat fins. one side is painted black with acrylic paint, I've had this spray paint lying around and read that black increases IR-radiation=heat, I think that is partly why the LED heatsinks are black, also elox increases surface too. the spraypaint kind of insulates also, which is not that great but it looks neat like this:).. the KB boards I got came super fast (3 days), those are the 3oz copper board versions they use for their 4mm plate versions without real heatsinks, they get pretty warm but not hot on max power, which is only 100w per board, they are rated for 120. they heat up to maybe 60 degree Celsius, but with the fan on they are barely warm on full power. drivers are 2x meanwell 240w 2100c, dimmable from 2.2 amps down to 0.7 amps, 2 boards per driver wired in series. cost was about 130 for the drivers, 170 for the 4 Kingrite boards (mounting screws and lamp cables included by the way) including tax, and like 40 dollars for the plate, minor things like power cable 10 bucks.. oh well a few 3 inch screws to mount the drivers about 2 inches above the plate, 4hanger screws... printed some TPU washers for between the board and screws too:). Always wanted to build my own LED lamp.. so the lamp cost me a total of about 370 dollars.. still HPS cost about half with Electronic ballast, but those LED's are lower energy consumption, more even light distribution and do not degrade like HPS.. so Iam happy so far:) 3000k boards