Hello folks, Great Forums/Great Info
I hope someone can help.
I'm having somewhat of a dilema and am hoping I didn't kill my girls. I've checked all the plant problem guides and nute troubleshooters I could find and searched these and other forums for 2 days with no definite conclusions.
I have a hydro grow using a GH waterfarm, 600W MH, PH is 6.0-6.4, 3 weeks into veg stage. PPM around 480-510 using RO water and GH flora nutes, light height is good around 12"-16" above tops. 18/6 light cycle.
2 nights ago the temp in the room dropped to around 58 or so and the nute temp was around 60 because I did not put the submersible heater back in from last weeks flush since it was starting to get warm outside. It is usually 70-80 during the day w/lights on and drops to 60 at night during the dark cycle and I'm exhausting the room every hour.
When I looked the very next morning, 6 of 8 plants leaves were all twisted, shriveled, curled up and there was a strong fresh cut grass or a chloraphyl-like odor. Prior to this everything was looking great, PH always drifts up to 6.5 then I adjust to 5.8-6.0.
What is weird is that of the hundreds of pictures I looked at of plant problems I have not ever seen leaves twist/curl up. My leaves are curled up longs ways like your twisting up a cig. and the stems of the most twisted ones are more purple than normal. There are also slight yellow/tan blotches on the curled leaves when I untwist them and look inside. I also took a quick peek at the roots since I read about root rot as a possibility and they looked white and fine, no brown. Mostly the large fan leaves are affected the new and secondary growth looks somewhat ok with slight damage.
Another peculiarity is that in the 4th picture you can see the 2 in the back left have no problem at all and the other ones do. These 2 that didn't get affected are the G13 cross Gov. mule, and the others that did get affected are the grandaddy purples and afghans. Are G13 strains more tolerant of temp than the others if this is the problem? I've read other posts from people who have had temps lower than this for a day or so with less or no problem???
I'm pretty sure the nutes, PH and lights are not the problem. Other things that happened that day are I added a no-pest strip because a clone I got a week earlier had some mites, I'm pretty sure I've got it under control with safer soap, etc... and none had spread to the existing plants and I have not seen any live ones with the mag. glass. I'm treating every 4 days for 2 weeks.
I've attached some pics to this post.
I really appreciate any advice from you experts on what's happened or going on.
The plant in the coco-pot is the double d clone that I got. It has a bit of mite damage but did not twist like the others.
This is the second day now and I don't see any improvment and the twisted fan leaves are starting to get crispy.
I did cut off the crispy fan leaves off 1 of the plants this AM to see if that will help.
Thanks!
I hope someone can help.
I'm having somewhat of a dilema and am hoping I didn't kill my girls. I've checked all the plant problem guides and nute troubleshooters I could find and searched these and other forums for 2 days with no definite conclusions.
I have a hydro grow using a GH waterfarm, 600W MH, PH is 6.0-6.4, 3 weeks into veg stage. PPM around 480-510 using RO water and GH flora nutes, light height is good around 12"-16" above tops. 18/6 light cycle.
2 nights ago the temp in the room dropped to around 58 or so and the nute temp was around 60 because I did not put the submersible heater back in from last weeks flush since it was starting to get warm outside. It is usually 70-80 during the day w/lights on and drops to 60 at night during the dark cycle and I'm exhausting the room every hour.
When I looked the very next morning, 6 of 8 plants leaves were all twisted, shriveled, curled up and there was a strong fresh cut grass or a chloraphyl-like odor. Prior to this everything was looking great, PH always drifts up to 6.5 then I adjust to 5.8-6.0.
What is weird is that of the hundreds of pictures I looked at of plant problems I have not ever seen leaves twist/curl up. My leaves are curled up longs ways like your twisting up a cig. and the stems of the most twisted ones are more purple than normal. There are also slight yellow/tan blotches on the curled leaves when I untwist them and look inside. I also took a quick peek at the roots since I read about root rot as a possibility and they looked white and fine, no brown. Mostly the large fan leaves are affected the new and secondary growth looks somewhat ok with slight damage.
Another peculiarity is that in the 4th picture you can see the 2 in the back left have no problem at all and the other ones do. These 2 that didn't get affected are the G13 cross Gov. mule, and the others that did get affected are the grandaddy purples and afghans. Are G13 strains more tolerant of temp than the others if this is the problem? I've read other posts from people who have had temps lower than this for a day or so with less or no problem???
I'm pretty sure the nutes, PH and lights are not the problem. Other things that happened that day are I added a no-pest strip because a clone I got a week earlier had some mites, I'm pretty sure I've got it under control with safer soap, etc... and none had spread to the existing plants and I have not seen any live ones with the mag. glass. I'm treating every 4 days for 2 weeks.
I've attached some pics to this post.
I really appreciate any advice from you experts on what's happened or going on.
The plant in the coco-pot is the double d clone that I got. It has a bit of mite damage but did not twist like the others.
This is the second day now and I don't see any improvment and the twisted fan leaves are starting to get crispy.
I did cut off the crispy fan leaves off 1 of the plants this AM to see if that will help.
Thanks!
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