new to the forum. first grow ever. leaves dried and brittle...

[biggbudzz25]

hello everyone I'm new to the forum and this is my first grow. I apologize in advance for the low quality photo due to the HPS light. these are my plants I vegged them for 4 weeks in Fox Farm ocean forest with no added nutrients. they are on day 3 of flowering and one plant in particular the leaves are drying up and fall apart if I squeeze them. even the tips of some of the leaves are gone. I have all of my plants planted in 5 gallon tall buckets. I did add nutrients the first day of flowering. they are now under a 1000 watt HPS lights with a 8 inch 740 CFM fan cooling the light. I also have an 8 inch inline fan exhausting the tent which is a 4x4x7 temperatures aren't usually above 82 degrees but I have seen it spike as high as 86. any help or advice is greatly appreciated. Thanks

 

[meroe]

way too hot man, marijuana literally stops growing at 84 degrees (29c) the ideal temperature for mj is 72 (22c)

 

[biggbudzz25]

sorry, I forgot to include a picture. the plant that is mostly affected is the one in the very back of my tent just next to the fan.

 

[meroe]

looks to me like its too hot, try a smaller watt light or atleast blast some cooler air through there

 

[-Dodge-]

way too hot man, marijuana literally stops growing at 84 degrees (29c) the ideal temperature for mj is 72 (22c)

Wow, where are you getting your information? This is absolutely wrong. Please cite sources or at least do some studying if you plan to give people advice. I don't mean to be rude, but you are being misleading.

 

[greasemonkeymann]

way too hot man, marijuana literally stops growing at 84 degrees (29c) the ideal temperature for mj is 72 (22c)

maybe some do, but as a blanket statement, that's not true.
You'd never have herb in Hawaii, southern mexico, equatorial areas, etc.
Ideally yes, you are correct 72 is perfect, but they won't STOP growing at 84 degrees.

 

[greasemonkeymann]

Wow, where are you getting your information? This is absolutely wrong. Please cite sources or at least do some studying if you plan to give people advice. I don't mean to be rude, but you are being misleading.

damn, ya beat me to it.

 

[meroe]

true.. i actually only just read that they stop at 29c like a couple mins b4 i posted it so not surprised its wrong

 

[greasemonkeymann]

sorry, I forgot to include a picture. the plant that is mostly affected is the one in the very back of my tent just next to the fan.

I think you answered you're own question, if it's an isolated plant issue, and NEAR the fan, my guess is a combo of heat and windburn.

 

[greasemonkeymann]

looks like ya got some sativa-heavy mixes there too, they are more tolerant of heat

 

[greasemonkeymann]

just be careful, there are some SERIOUS flame-Nazis on this site... they'll have a field day. Surprised you haven't gotten attacked yet.
shhhhh, just don't move, the flame-nazis' have motion-based sight, don't move and don't make a sound, they're like t-rexs.

 

[biggbudzz25]

thanks for all the advice though.I've got my fan on the highest setting so I'll turn it down some. I have my fan that cool the light vented straight out of window. I've also been running my air conditioning at 70 degrees so I'm not sure what else I can do to get my temps down.

 

[biggbudzz25]

I've got temps down to a steady 77 degrees during the light cycle. Is that still too hot?

 

[-Dodge-]

I've got temps down to a steady 77 degrees during the light cycle. Is that still too hot?

That's just about perfect. Not too hot at all.

 

[Alexander Supertramp]

Wow, where are you getting your information? This is absolutely wrong. Please cite sources or at least do some studying if you plan to give people advice. I don't mean to be rude, but you are being misleading.

I agree. And I also see no signs of heat stress in the pics. But the OP does needs to take some pics under normal lighting to get an accurate diagnoses.

 

[Alexander Supertramp]

I think you answered you're own question, if it's an isolated plant issue, and NEAR the fan, my guess is a combo of heat and windburn.

Not heat I can almost be certain of. But wind burn is a very possible cause.

 

[greasemonkeymann]

thanks for all the advice though.I've got my fan on the highest setting so I'll turn it down some. I have my fan that cool the light vented straight out of window. I've also been running my air conditioning at 70 degrees so I'm not sure what else I can do to get my temps down.

also keep in mind that AC systems dry the air out considerably, which makes the plants transpire water more quickly, which also leads to possible windburn probs.

 

[biggbudzz25]

I will take some pictures under normal lighting this evening. I do notice a few leaves on a couple other plants in same room that are doing the same thing.

I agree. And I also see no signs of heat stress in the pics. But the OP does needs to take some pics under normal lighting to get an accurate diagnoses.

 

[greasemonkeymann]

Not heat I can almost be certain of. But wind burn is a very possible cause.

I wouldn't be so sure of it not being heat related, he did say it got to be 86 degrees, some strains get a lil pissed at that, especially coupled with a fan being near it.

 

[biggbudzz25]

also my humidity is never below 40% while running the AC.