Few plant issues in flower, suggestions?

Hey all, have a new setup going. They have been in flower for 10 days. I have sealed room. Here are room parameters

Temps 82 in room 86 canopy, lights off 72-74
co2 1500-1600
humidity 45-55
canna coco in #5 pots
canna coco nutrient line
40 gallon res, 400 a and 400 b, 200 cannazym, 100 rhizo, 30ml mammoth P, 50 ml cali magic (no canna boost yet)
4 x 4 tray, flooding every 3 hours when lights on, once during lights off
EC 1.6-1.8
PH 5.7 - 5.9
water temps 72-74
mix of 1000 watt HPS and 1000 watt Gavita DE lights

I am only having this issue on a few of the 12 plants I have growing. Seems like couple issues. The wrinkle leaves issue has been there since the beginning on one specific strain (exodus cheese, mostly new growth), not having the yellow/damage leave issue. The yellow/burnt looking and unhealthy leaves issue is mostly on one other strain (grape god) and just started a couple days ago.

Sorry for the bad pictures, hate that green look with hps lights.

**updated with photos taken through blue glasses


thanks all for any input

looks like you are giving them too much N, I don't usually need to go higher than 1.1-1.2 EC what ever strain i'm growing with canna A/B, what is the EC of your plain water ?
looks like MG def as well, i would let your PH drift up to 6.3-6.5 so you don't lock out MG and Calcium.

bobtokes said:

looks like you are giving them too much N, I don't usually need to go higher than 1.1-1.2 EC what ever strain i'm growing with canna A/B, what is the EC of your plain water ?
looks like MG def as well, i would let your PH drift up to 6.3-6.5 so you don't lock out MG and Calcium.

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I am using RO water, since using canna coco the ph has never gone over like 6 or 6.1 on its own, I could use ph up if need be though. I lowered the ec to 1.3 last night by doing a top off. I will watch how its going over the next few days.

The claw like shape of your leaves is a tell tale sign of nitrogen toxicity..
usually starts on old growth and works its way up.. @bobtokes is right on!

Okay thanks all, just dilute the reses some more to bring the overall ec down?

if your using RO water you will need to give them a shot of cal/mag

bobtokes said:

if your using RO water you will need to give them a shot of cal/mag

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I added a little bit of cali magic to the reses when I put them into flower, I only added 50 ml though since I was not really sure if they needed more cal/mag then what the canna coco a/b provided. Since topping the reses (lowering the EC) they have not seemed to get any worse at least, still keeping an eye on them of course though. I also flushed them with just pure ro water as well.

How about this, this the same issue overall, to much nitrogen?

Is new growth looking better?

HydoDan said:

Is new growth looking better?

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Most new growth seems to be looking ok, still have a bit of wrinkling on the one strain though, will go have a better look tonight after lights on.

this should help
http://www.growweedeasy.com/marijuana-symptoms
this is for sick plants
http://www.growweedeasy.com/cannabis-symptoms-pictures

linky said:

Most new growth seems to be looking ok, still have a bit of wrinkling on the one strain though, will go have a better look tonight after lights on.

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have you raised the PH yet, you need to raise the PH to at least 6.3 to allow the uptake of cal/mag, do that 1-2 times a week