hello guys, this is my 2nd grow, 1st one i ran soil and had no issues, this time im running coco and did a 5 week veg under 600wt HPS and a 300wt LED, they are topped/fimmed 2 of each i have 4 plants 2 critical mass and 2 amnesia haze all seemed fine till about a week ago my ballast died on me so they only had LED for 4 days and still seemed fine feeding well 800ppm everything looked ok its been 2 days now with the HPS
ballast replaced and they are back on 600 HPS and 300 LED 800 ppm i flipped them to flower the day b4 my ballast broke around a week ago, timing couldnt have been worse but now i have run into this issue and i think its calmag deficient but i dont want to be wrong and do even more damage at this critical time of beginning flower can any of you take a look at these pics and help me figure out my next course of action? any advice would be really apreciated , thanks in advance guys and if you need more info please fire away 
Hi TMc, welcome to Percy’s mate. Interesting problem you have there. A couple things look possible with your grow. The symptom and the timing point to light burn. The symptoms started after you changed the ballast. If you had a weak ballast you could be putting out more energy to the plant now with the new ballast. The feed rate seems a bit high but if she was fine before and the only thing you changed was the light ballast I’d back off the light a bit and see if she responds.
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@monkeydo thanks for reply m8, my old ballast was a 1k wt and i was running it at 750wt with the 300 LED then 5 days without HPS only the 300wt LED and now 2 cycles of 12 hrs with HPS back 600wt (+LED) and i find this new growth only is looking really bad, larger leaves totally fine but as in pics lots of the new growth is shriveling up, the haze being worse affected, this new ballast is just a cheap Lumi 600 no controls so i cant dial it down but have move to very top of my tent, you could be right man, this is new ballast and new bulb, as for feeding they are 5 week veg and veg nutes were around 900, i dropped off a lil bit as flipping to flower gave small 2ml per liter of flower nutes with half veg nutes and calmag, i have no burn and have actually dropped ppm a little bit this week, i just foliar feed with tiny pinch of epson salts as a friend said cant do any harm i have no bud sites forming yet so im kinda praying i can get this sorted out pretty quick
Let’s hope your girls respond m8. If you weren’t getting burn your nutes were probably OK. I started running lower numbers a while back and just increase fertigation cycles if the plants get hungry. Now when I see bigger feed numbers it immediately makes me look twice.
I’m sure the rest of the community will check in shortly and maybe offer their opinions. That side of the world isn’t awake yet.
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