Plant problem - Please Help!!

Grow:
2x 1000 watt SolarMax/VEG - Metal Halid- Air cooled 4 feet Away running @ 75%

Temps are have been @ 68-76 most grow
except for a few heat waves but never over 85 Degress for Longer then 4 hours.
Humidity has been 50-60 except a few days they dropped to 25 I added a humidifier and have kept it at 50-60%
Running light 24/7

Air circulation is good fan blowing over the top and two others moving air back to the carbon scrubber.

DWC - 55 Gallon 6 pot system- 67 Degress
R/O water - system is currently at 6 PH -Stable
40 Gallon Reseivor - 5.7 PH currently - 67 Degress
30 days since planted seeds.


Nutes: cultured soultions veg a, veg- b @ at half of recommended strength, UC roots, cal-Mag half strength, when I topped the first time the stem I cut was hollow, so I added Dyna-Gro Pro-tekt Tek. 0-0-3 Silicon. The system is at 210ppm and the Rez is at 420ppm (EC500 Scale)

Ok so in the beginning I had some PH fluctuation problems because of a faulty PH meter that didn't hold calibration for longer then 2 days, I fixed this issue and everything has been stable running at 5.7 to 6.4 ph. Now i have topped the plant 2 times and growth is ok except I'm getting these spots on the leaves and curling of the leaves and wavy leaves. Not sure what they can be.. My roots are white no problems there. I have done 1 water change. I'm just not sure what this can be? The last picture I attached was from the Ph fluctuation and that leave has been cut. This is a Mendocino purple strain so the roots have always been purplish. I have co2 that I need to setup tomorrow so I can get my temps higher and utilize my 1000 watt lights. Should I setup now or just for flowing? This is my first grow so please help!!

is that the back of the leaf? if so i'd say sulphur def probabley if thats the case then epsom salt and a weeks wait and you know

Looks like a Boron def

Boron def


Click this pic to make it bigger/fullscreen


http://www.growweedeasy.com/boron-deficiency-cannabis

polaroid93 said:

is that the back of the leaf? if so i'd say sulphur def probabley if thats the case then epsom salt and a weeks wait and you know

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No it was the front of the leaf but it's not like that now, that was all caused by PH fluctuations. That problem is cleared tho and the PH is steady 6. I will do a full water change today and add 75% strength nuts. Or is that too much of a jump? It was recommended 2 ML of the veg A and B I only added ML 1 ML

Looks like N tox to me with that super dark growth and over watering can easily explain it's sad droopy look .....

It's in DWC so it can't be over water.. I'm attaching new pictures of The plant and the nutz I'm using using. Everything is at 50% strength

yeah hard to tell from the prospective of the pics but looks like soe clawing going on as well as the super dark leafs. N tox

coreywebster said:

yeah hard to tell from the prospective of the pics but looks like soe clawing going on as well as the super dark leafs. N tox

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Ok what's my best soultion? Drain everyhing out and start fresh? How much nuts should I add??

Jerro said:

Ok what's my best soultion? Drain everyhing out and start fresh? How much nuts should I add??

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Just looked at one of the other pics. May be some ph fluctuation issue too. I would treble check you have your PH meter is calibrated correctly and keep checking PH is not changing rapidly. As for the N tox cut down on nutes for now.

coreywebster said:

Just looked at one of the other pics. May be some ph fluctuation issue too. I would treble check you have your PH meter is calibrated correctly and keep checking PH is not changing rapidly. As for the N tox cut down on nutes for now.

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Ok thank you!! I will change the water today, add same nuts 50% strength and see what happens.

I cleaned everything out changed the water and new growth looks much better, still alittle curling, can you look at the pics and let me know if this is normal please.