Does anyone know what this is?

Sorry, guys. My first grow is in a DWC setup and I'm using a 600w HPS light in a tent. I believe I let my temps get too high which might have resulted in root issues. I'm unsure. This is a pic of a leaf I took off of one of my plants (wonder woman by Nirvana). Two other plants are having issues as well although neither look exactly like this leaf. My ph is okay and I have gone back down to half strength nutes. I didn't take pics of my other plants because I didn't want to remove any leaves and my camera phone doesn't take great pics under my big light. I can post better pics later when the big light goes off. Any takers on what this looks like? I've boiled my problems down to a few solutions but I'm not sure which is the right solution. Thanks in advance to all who might offer any suggestions.

Pretty sure on this one but do some more research, make your own diagnosis.

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

BTW, taking a few diseased leaves off a plant is not going to cause any problems.

Okay, I just went ahead and picked a couple of leaves from the other two troubled girls because I don't really have time to wait for the light to go off. The top leaf in this pic is from my northern lights plant and the other leaf is another wonder woman leaf. Both are from nirvana. Any help would very much be welcomed because I have looked it over google and online grow bibles and while I have narrowed the options down I haven't come to any conclusive ideas. Heeeellllppppp meeee Thanks again, guys.

$bkbbudz$ said:

Pretty sure on this one but do some more research, make your own diagnosis.

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

Click to expand...

I agree. The other pic I posted the other wonder woman seems to have the same issue although she is fairly droopy in comparison. There is something else wrong with the nl (the leaf on top in the 2nd pic). I am thinking nitrogen issues? All these different symptoms are making me wonder if there is a root issue. I know I'm not the only person who is having issues with their first grow... but darn. I know my temp accidentally got a little high for a few days. Around 86F. I've got it down to 80F now.

I would not be to concerned with a slightly high temp for a few days. I really cannot offer an opinion on how to fix your issue(s) with a DWC grow. I have never done one. What I can say I think both plants have the same issue.

I believe the issue could also be your res temp. Im currently doing my first DWC and Im noticing that when the solution begins to warm, the plant begins to droop at the middle of the leaves and the ph increases. And when the solution is cooler, the ph remains at 6.0.

GrowinUp888 said:

I believe the issue could also be your res temp. Im currently doing my first DWC and Im noticing that when the solution begins to warm, the plant begins to droop at the middle of the leaves and the ph increases. And when the solution is cooler, the ph remains at 6.0.

Click to expand...

Thanks, Growinup Yeah I have discovered that my ph keeps going up a little bit. I don't have a ph pen yet but I do have the liquid ph tester and I've gotten the ph down to what seems to be about 5.8 or so. Hopefully it was just nutrient lockout and that was what the different deficiencies signified. Here's to hoping that I've fixed the problem.

They already look much happier and I mean all of them. I think it was just a ph issue and it just needed to be a little lower. I'm getting a ph meter ASAP/when I can afford one but until then I guess I will have to keep using the liquid tester. Thanks to all for the help, folks.