Bagseed first grow

Hi guys, thanks in advance for all the answers. Mr. Block, I got 2X50w Leds on the top and used to have a 40w in the center veeeeery close to the tops(cause I got no vertical space left), now, I've tie them up again(3 days now) and got a new 80w led full spectrum, plus those 2 50 watters. It can be the proximity to those leds and in no way Heat, highest Temps around 27 in a very hot day. Nobody01: I've been giving them all the same amount of nutes, a bit lower than the chart says so, toxicity doesn't make sense to me but, I'm learning as u can see. Should I try cal/mag? Nexgrow: The top ones are way more affected than the oldest ones but, a couple of weeks ago they bounce back on the color, now, they are not doing It. Also, I have purple stems on a couple of (colas), the bigger ones... I can update with more pics If you like. I've flushed that one 6 days ago and been giving her half her "needs" (I Think). I'll update with more pics tomorrow so you can see If there is something I can do. The prob is I don't know what strain they are (same bag of weedl but I've been giving them all my love and affection. It's for my p. use and hope they thrive. In my country is still illegal to buy or even have 1 plant in my house and I have slot spine problems so, let's hope they thrive and give at least, something I can medicate my self with. By the way, one of them( "the healthy one") shows clear signs of TMV, the thing is, that one is vigorous and very, very healthy. Thanks in advance guys, just by replying to me, you made my day. Sorry for my bad English, hope u get It.