AutoExtreme - Heat stress or infestation?

[DarthMaul]

HI guys I need your help !

Strain: Dutch Passion Autoextreme Autoflower
Age: Both are 16 days old
Water: Once or twice per week depending on weight. Watering around 20% of total pot.
Fan: Constantly blowing on speed 1 out of 3 on the plants so they dance around.

I have a issue with heat according to the digital meter it gets between 73 to 90F throughout the day.
Some of my plants show signs of suffering.
Is a air conditioner needed? Any other heat reduction solutions instead of A.C?

Please tell me what you think heat problem or infestation???

Its my 2nd grow, my first grow was a success 2 plants gave me around 100 grams dry.
Never had infestation and I sprayed my plants with neem oil around 5 days ago.
Could it be the neem maybe?

Thanks

I added the pics on the website because the uploader wont let me chose add pictures... "error: Invalid File"
Are you aware of a problem with upload Admins??


LINK FOR PICTURES HERE: http://pho.to/5Hw0x

 

[namvet25]

Have you seen any insects? D0 you have a fresh air incoming fan and a exhaust fan? What is your growing area made of tent,box,closet?How big is the grow area?What is your RH?What kind of lights and how close are they to your plants?What are you feeding them and are you using cal/mag? Don't have your fan blowing to close or to strong on the girls,just a little breeze is all they need.

 

[DarthMaul]

Have you seen any insects? D0 you have a fresh air incoming fan and a exhaust fan? What is your growing area made of tent,box,closet?How big is the grow area?What is your RH?What kind of lights and how close are they to your plants?What are you feeding them and are you using cal/mag? Don't have your fan blowing to close or to strong on the girls,just a little breeze is all they need.

1.) No insects, however I caught a mosquito next to the light recently... Dont see any bugs on the plant.
2.) I grow in a tent like environment but I keep the tent open because I dont have an exhaust fan. There is fresh air coming in from other rooms into this room
3.) The grow area is 80x175x55cm = 31x69x22
4.) As illustrated in the pics the rH is between 25 and 59
5.) I haven't started feeding them I am planning to do so next watering. I will use Biobizz since I had a positive experience with it last time.
6.) I do not use cal/mag but I have epsom salt for foilar spray, should I apply?
7.) My fan is around 30 cm away from the plants.

EDIT: About the lights 2x 125 CFL 6500K and 1x 105W 2700K around 2-3.5 inches away from the plant

 

[namvet25]

Don't use neem oil if you don't need to.If your having heat problems you need to have a exhaust fan sucking hot air out of the tent.Start feed them asap and make sure the entire pot is watered until runoff.You need some calcium and magneseium .Use some molasses at one tsp.per gal this will give you your cal/mag.Also I would move your lights up to at least 8 to 10 inches to avoid heat stress.

 

[DarthMaul]

Can I use a fan to blow out hot air instead of using an exhaust? I'm growing 2 plants and I didn't use an exhaust fan last time.
Will a Airconditoner also work instead of a Exhaust fan?
I thought molasses is only good for flowering? I will try to feed them asap including the molasses.
If I move the lamps up another 4 inches they will stretch though... won't they?

Thanks for the tips.

 

[namvet25]

You can use a fan to draw air out if its big enough.Try and mount it near the top of the..tent where the heat is the most.A typical air conditioner is going to get to cold I would think. If your lights are big enough they wont stretch.Molasses can b used for entire grow t fed the micro organisms and itcontains cal/mag, iron, and other micro nutes
.
.

 

[Waira]

Cyclos- Looked at the pics; not a bug issue for sure, leaves look like water/environmental stress; part of the trouble is the heat and breeze strength combined, making them water stressed at the foliage level; Nammy's right about the too close proximity of the CFL's,... what's the RH too? -really important! *** What neem product did you use? The raw stuff, or a pesticidal extract? Raw neem has lots of good effects beyond pest control, but like any foliar spray you must be very careful about following recommended dilution for this! And did you spray and then put right back under the lights? This alone can cause some surface damage, burning,.... yeah, looking at the pics, I think the neem spray combined with the already stressed leaves from heat and constant strong breeze and going right under the lights caused this damage,... good news is, the new growth looks fine otherwise!
>> gentle air movement is what the plants like, but whatever works best to blow that hot air out of the tent is more important... and proper RH! Mind that AC unit, it sucks the moisture out of the air, so don't use it unless you really must; again, find out what your RH is in there, okay?
>> yes! Like Nammy said, start feeding now.... molasses is a nice supplement to use with your other nutes throughout the grow; it has Ca, Mg and K in chelated forms (readily absorbed), and the sugar is great for the soil microbes and more remotely, the plant.......I use about 1T/gal for soil drench!
>> your girls could use some stretch, so move the lights away for both reasons, and see how they respond,... :smoke:

 

[hank]

Water on leaves.

what soil mix and u phing your water? see a little twisting. Maybe very early calmag or your soils hot.


73-90 is huge without c02.

move more air.