A Sick Jock Horror

[sabreman61]

This is my second sick plant out of 4. It seems like the back spot in my tote DWC system has a curse on it. LOL Ok Here is a link to my grow journal autoflower.net/forums/f35/hi-all-my-first-af-grow-37161.html#post701017.
I am under 20/4 lighting. I am using Dyna Gro Bloom 3-12-6. I added 3ml per gallon of CalMag also. 400 Watt HPS. My rez temps are between 60 and 68 degrees. I don't know what to do. The plant is 65 days old. I expect another 60 days until it finishes flowering. I think Jock Horror takes longer cause it's a sativa. Please Help!
:slaps:

 

[pop22]

looks like a number of problems may be happening here. We need to know the PH of your water. What is the height of your light from the top of the canopy?
Current PH and any PH tests that you can remember from recent time, say the last 2-3 weeks At first glance it looks like nute deficiency or lockout. Also the curly leaves say heat stress.

 

[pop22]

Hey!

Realise, I'm competent on the basics, but there are people with lots more knowledge than I have whi will help you. Sometimes you have to make a little noise to get heard though...lol!
That said, I don't mind helping if I can. Just posted on your thread.

Regards,
Pop

 

[sabreman61]

The PH is a consistent 6. The light is about a foot above the plant.

 

[pop22]

What is your water source? When your running DWC and you know you parameters are right, then your water is suspect. Also, do you check your PPMS / EC? of so, that info can help also. 12" os rather close, raise ot to 18-20" of you can. I suspect the light is causing the heat stress.

 

[Waira]

Hi Sabreman'- ....I'm going to whistle up a DWC savvy person here,... this looks like really advanced Ca defc., maybe others too,..?...but the trouble is, when it gets this bad, the symptoms mask each other,... she looks a little cooked too,..1' from HPS 400w can get too hot, depending on your set up, etc.,... you say the pH has been consistent, no jumps/dips? Hang tight bro', I'll go knock on a couple doors,....

 

[pop22]

http://www.growweedeasy.com/heat-light-stress

 

[sabreman61]

One other thing I noticed. They are not drinking as much as they should. I think it might be a lockout. I am doing a rez change right now. I am not going to add any nutes. I am just doing Ph water to 6. I only have a liquid ph tester that came with my GH PH up and down kit. I am gonna add 1 ml per gallon of H2O2 and 3 ml per gallon of calmag. This was suggested by a guy at one of the hydro shops here. Does this sound right?

 

[sabreman61]

I pointed the fan to blow right under the light. Hopefully this should help with the heat. I have a small grow room and my light is as high as I can get it. I can try to raise it up maybe another 3-4 inches but that is it.

 

[Dazed]

:karma Cloud: sent your way Sabre buddy.