A little pale/slight yellowing

[pink isn't well]

Hi all,

Enjoying my 2nd grow, much more than the first.

It's similar to an issue I've encountered. It's possible nutrient def. (CalMag I suspect..)
Or could it be heat or light stress?

RQS seed co. Haze berry, Sour diesel, Lemon haze, whit widow and OG kush.

I expect to see differences in heights and growth, but two oe three show signs of not in tip top health.
I have popped back in to look and they seem a little happier than this afternoon when I took the snaps.

Have fun lecturing and advising me folks. I love it - Peace j.

Ooh I forgotten the details.

600hps
1.2mtr tent with two desk fans and an inline,
Coco soil - canna A/b - some extra suplements (few drops of superthrive , 3-5mil calmag per 5ltr_

temps 28c - 30c hum 40%

Theyr looking pretty good for the times to be honest. theyr, 1st set of true leaves showed 30th dec.
So theyr only 14 days old in that sense.

1/4 strenght feed 1st week, half last week, and 1st full strength feed this week, colour started
looking off a few days ago. ph 6.1 or 6.2 (if I leave the solution overnight or so and use it again without checking ph, could this be the answer? will ph drop a lot, and would 1 - 2 feeds, with ph too low do it)

Could it be the light? It's beedn at 14" inches above them for a week but the canopy is not too hot, 29 - 30
with plenty of breeze. Or have I got it wrong with nutes again thanks guys

 

[KryptoBud]

They look hungry to me but I've never used coco. Depending on your water you ph can swing overnight I would make sure before using.

 

[pink isn't well]

They look hungry to me but I've never used coco. Depending on your water you ph can swing overnight I would make sure before using.

thanks, i wont be lazy again. I moved light and give a feed, and theyr looking much greener, happier, and seem to be growing quick again... I hate that sickly yellowing. reminds me of the dreaded cal/mag def. I encountered 1st grow. took ages to get them healthy.. but I got this sorted in time I think.. gonna feed again tomorrow and stay on top as im bottom feeding perhaps it takes a little longer to distribute the solution. Thanks tho,, hungry was the answer I think,,