Help!

Hello folks!I have lowryder #2,3 plants.I'm growing with 9 23w cfl's.Plants ar on second flowering week,bet one af the plants have problem with leaves,i dont have any idea why it's happening.Here some pics

What is the temp at the close to the leaf ??
IMO thats a heat issue. And maybe lack of humidity and water.

eza82 said:

What is the temp at the close to the leaf ??
IMO thats a heat issue. And maybe lack of humidity and water.

Click to expand...

Temp in growbox is 23c,PH is about 6,5.
Only problem i dont know about humidity becuse i dont have humidity meter,Maybe humidity is too low,but other 2 plants are ok!

I have a plant that just went on 12/12 a week ago, and it looks the same as yours, just not quite as bad. I know it's not temperature, humidity, etc.....and have it narrowed down to overfert or overwatering. It's leaves are a darker green than the other plants, so I'm thinking that I used a little too much of the new fert I switched to. It could be frowm watering too, but i don't think so. I don't water excessively, but it just so happens that i watered it heavily right before i noticed the problem. It's a strain that was noted for not liking too much water, so I'll have to wait before i know that actual cause, but I'll let you know if I do.

I cant see over watering problems , OR nute burn ????

I wouldn't have guessed that either, but I can't seem to figure out what's wrong with the one i have. And, it's in the same environment as the other plants in the growroom, same age, same soil, same PH, etc....so that's the only thing I've come up with so far. Hmm.....

Perspiration is what it looks like !
How much wind/ air you boys pumping on them ? And at what humidity ?

I always keep and 14" oscillating fan going in my growrooms. Mine was looking a little droopy in veg, then got worse when I put it on 12/12. The temp in veg is around 80-82* with 45% RH, and bloom is in the upper 70's with 25-30% RH. Mine is starting to look better each day, so it might not be an issue anymore, but I'd still like to figure out what caused it. Any ideas?

The fert I'm using says to feed with every watering, and on the hotter days(dries out the soil quick) it could get fed up to 3x a week. I'm thinking that much be too much, because normally growers don't have to water that often?

Outside or in ?

Perspiration is the water evaporating through the stomata on the leaves.

ie; It cools the plant in the hot sunny days, in the similar manner as we get cool by perspiration and get dehydrated if we get too much sun !

As it would with HID in close prox with out humidity, and a dry wind blown on it. You have replicated a desert environment, not many leafy greens or flowers like that !

Roots also store the water. Stored water helps the plant to compensate with it.
If not ENOUGH water is available to the plant will first curl away from the source ie sun or lights. then the tissues will start dying and they will turn brown in color, eventually falling off.
BUT
Evaporation is also necessary! Now to fuc with your head, the plant needs the stomata open for the intake of Co2.

IMO, its either a lack of water, high temps, or low humidity. Probably a combination of the three

P.S Sorry late here, little pissy.... dam turkey

LOL, Nah, you aren't being pissy. You're just confirming things that I've been thinking, which is what i wanted to hear. I already dropped the temp in the bloom room to 73-75* in the day, and it gets to about 62* at night. I can't really do much with the veg room ATM, so I'm going to leave that as is, for now. I'm going to water it when the lights come on today, and see if she perks up. I've been letting it dry out a little more than I normally do, just so i know it wasn't an overwatering problem that caused it. It's not excessively dry yet, still damp at 2 1/2", just a little more dry than my usual. Thanks, I'll report back in later and report any changes.