Not sure what is going on.

[ubet28]

I am not sure what is going on here.

The grow is Northern white widow they are in a areoflo 18, ppm 800, ph 6, Lights 2 1000s i run one for 6 hr and then the other 6hr.

The leaves are canoeing and real waxy this has been happening for the last 3 grows. So could really use some help from ic. This will just get worse and the buds will turn out real airy. I can not figure out what is causing this. This has effected yields from like 10 z a plant now they are down two 3 a plant and they will not get dense. PLEASE HELP

I also should mention the top pick is widow and it is the plant that started doing this last time first and the northern didn't till close to the end.

Not trying to be a dick but please only people that can give me solid advice. Thanks

Also these are at 33 days this is just not right.

 

[10k]

You're not providing enough information about the grow...

IE: 800ppm of what exactly ?

 

[dkmonk]

Check your temps and it looks like they are sensitive to your nutes so lower your doses, but first fill out the infirmiry questionare. I believ it is a sticky.

 

[drow]

I have the same problem. Upside down canoeing without it being waxy. Mine are brittle or regular.
I first noticed it when temps got around 94 F with 35% humidity. So I am guessing a hum/temp problem.

My current temps are 80F day average with 70F night average. I am still noticing it though. I do not have air cooled hoods as well. The weird thing is some plants arent even showing it especially the corner plants. I would like to know an answer as well.

 

[VerdantGreen]

sounds like the affected plants may be too close to your light and getting stress from the radiation heat from your bulb (even if your room temps are ok)

what's your wattage and how close are the affected plants to the bulb?

 

[ubet28]

What STRAIN are you growing? -White widow northern
What was the establishing technique?- clone
What is the age of your plants?- 33 days bloom
What Technique are you using? -Airflow
What substrate/medium are you using?- Hydroton
What is the Nutrient temperature? -68
What Nutrient's are you using? -GH 3 part
What is the TDS/EC/PPM you are using?- 800 to 1000
What is the pH of the "Tank"? -6.0
Are you sure your calibration is correct on your equiptment? -yes
When was your last watering? -24/7
When was your last feeding change? -weekly water changes
What size bulb are you using? -1000
What is the distance to the canopy? -18 inches
What is your RH Factor? -70
What is the canopy temperature?- 82
What is the Day/Night Temp? (Include flucutaion range)- 78 day 68 night
What is the current Air Flow? (cfm etc.) -air cooled hood 8 inch i think its 500
Is the fan blowing directly at plants?- small fan blowing on plants
Is your water HARD or SOFT? -not bad 200 ppm
Has plant been recently pruned, cloned off of or pinched- no
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's - have noticed some white flys trying to get rid of them now

 

[dkmonk]

Rais your lights i would say 12 inches, 18 inches away from a 1k watt hps seems a bit too much. Wait for someone else to reply though dont know much about air cooled hps's.

But im pretty sure i am right though, just not sure about how much you should raise them to.

 

[Mo Budz]

They are overfertilized, and the cupping you are seeing is from having too much N. Most likely there is not enough light to process all of it. They call it the ram's horn effect. You said that you are running 2 1000w lights, one on and one off for 6 hours at a time. What size area are you flowering in?

When I have seen this before, it has almost always been in plants that were on the outer edges of the garden. The plants in the center where the light is most intense will process the fertilizer alot better, therefore they will not be as affected. You will first notice this in the smaller leafs closest to the bud formations, and if not taken care of fast enough, it will spread to the fan leafs, and the entire plant.

It can be possible to pull off a grow like you are doing by having one light running and the other off, but nutrient levels have to be dropped to account for the lack of light. On the density note, that can also be from a combination of the lack of light, and the high levels of fertilizer that cannot be processed by the plant.

If you had say 12 lights running, and had 6 on for 6 hours and flip floped the other 6, there would be alot of overlap from all the lights combined in the room. But when it comes downt to only 2 lights, and 1 is off while the other is on, you will be seriously lacking the light intensity needed for proper bud growth. Hope this helps.

 

[ubet28]

They are overfertilized, and the cupping you are seeing is from having too much N. Most likely there is not enough light to process all of it. They call it the ram's horn effect. You said that you are running 2 1000w lights, one on and one off for 6 hours at a time. What size area are you flowering in?

When I have seen this before, it has almost always been in plants that were on the outer edges of the garden. The plants in the center where the light is most intense will process the fertilizer alot better, therefore they will not be as affected. You will first notice this in the smaller leafs closest to the bud formations, and if not taken care of fast enough, it will spread to the fan leafs, and the entire plant.

It can be possible to pull off a grow like you are doing by having one light running and the other off, but nutrient levels have to be dropped to account for the lack of light. On the density note, that can also be from a combination of the lack of light, and the high levels of fertilizer that cannot be processed by the plant.

If you had say 12 lights running, and had 6 on for 6 hours and flip floped the other 6, there would be alot of overlap from all the lights combined in the room. But when it comes downt to only 2 lights, and 1 is off while the other is on, you will be seriously lacking the light intensity needed for proper bud growth. Hope this helps.

Hey Thanks

This info is exatly what i was looking for it is spot on th eplants are on the outer edges and it is starting close to the buds.

Could i take and move the plants away from under the lights and run both at the same time just directly on top of the plants or would it be better just two use one light?

Its not vary often i feel 100% confident in what someone tells me but what you had to say makes all the sense in the world since this all started 3 grows agao and thats when i switched sytems and the plants are getting to big for my room. THanks So much. If you guys search in the grow diarys AK-47 by serious you can see better pics of a previous grow were i had same problem plus had some Ph problems.

 

[Mo Budz]

Np. My general rule of thumb for my style of growing is about 20 to 25 plants per 1000w light in a 4 x 4ft area, and thats in 2 gallon containers full of coco. But I only veg for 10 to 14 days depending on the strain so my plants finish up around 2 - 3-1/2 ft tall. You can use less plants per light, or more depending on your veg time. If you can run both lights at the same time, I would do that, and evenly space them out under each one for your best chance of a higher yeild. The thing is, the plants need photosynthisis to conver the nutrients to energy for growth, so by providing more light they can do more with the food you give them.

I would try backing off the nutes by about 100 to 200 ppms, and cut out the grow all together if you already havnt. The Lucas formula seems to be a pretty balanced nutrient profile and you only use micro and bloom. Once this happens to the plants tho, it will not reverse, and your yeild will suffer. But if you do provide them with a higher intensity of light, then there is a chance you can get them to push out a little more flower and hopefully be alot more dense then they would be in the situation there in now. Next time around, experiment with more light, and less nutes to start. If they look like they could use more then bump em up, but if you see that curl starting closest to the budz, then back them down asap.