Help plants look burnt

[BlackTriangle1551]

I was looking at my plants yesterday and noticed a few leaves turning their tips straight down(just the tip of the leaves ) and today they are sort of burning. I water once a week and my PH is at 6.8. I use nutes every other water. Week 5 of flower today and I feel like the bud growth sort of slowed down this last week. But this is my first grow so idk what to expect out these. 1000watt hps have a fan blowing. Any help is appreciated thanks

 

[The Great Gonzo]

Turn off your LEDs and retake the pic.

 

[CanadianJim]

Then tell us what you feed at what concentration. Miracle Gro at full strength? General Hydroponics flora trio at half strength?

 

[JSB99]

View attachment 4390467 View attachment 4390462 View attachment 4390463 View attachment 4390464 View attachment 4390465 View attachment 4390462 View attachment 4390463 I was looking at my plants yesterday and noticed a few leaves turning their tips straight down(just the tip of the leaves ) and today they are sort of burning. I water once a week and my PH is at 6.8. I use nutes every other water. Week 5 of flower today and I feel like the bud growth sort of slowed down this last week. But this is my first grow so idk what to expect out these. 1000watt hps have a fan blowing. Any help is appreciated thanks

That's either due to a nutrient deficiency, or giving too much, possibly causing nutrient lockout. She is showing signs of calcium/magnesium deficiency. If you are giving the correct amount of nutrients, and your pH is in range but you're seeing this, it means you need you supplement "CaliMagic/CaliMag". You can get it everywhere.

 

[SheeshM]

1000w hps puts out some heat. What is your temperature and hanging height? Like others mentioned, post a photo under natural light.

 

[Don_Sequitor]

Slightly too much P.

 

[BlackTriangle1551]

Then tell us what you feed at what concentration. Miracle Gro at full strength? General Hydroponics flora trio at half strength?

These were put in a pot with cow manure compost with perlite and peat moss at an even mix. Plants were doing really good until I started using nutes. Maybe I should back off a little on nutes and see. I do not have an LED I just have a 1000watt HPS hanging 2.5 feet from the plants with a inline blower cooling my light. A fan is on them 24/7 on low. I also noticed some pistils on one plant turning orange already at week 5 of flower. Hmm. They get fed half dose of fox farm tiger bloom.

 

[BlackTriangle1551]

 

[BlackTriangle1551]

1000w hps puts out some heat. What is your temperature and hanging height? Like others mentioned, post a photo under natural light.

How high would you hang a 1000w HPS

 

[BlackTriangle1551]

Turn off your LEDs and retake the pic.

Posted pics above

 

[CanadianJim]

Maybe it's just the lights you're using, but those plants look wicked pale. Can you post a pic in sunlight? Or are your plants as yellow as the pics show?
Looks indica dominant, so orange pistils at week five wouldn't be unheard of.

 

[Don_Sequitor]

Hmm, too much P might not be correct based on the updated picture. Burned blotches happen with lots of soluble P and K, however, that is not usually accompanied by light green and yellow leaves at the base.

Consider @JSB99 recommendations.

 

[JSB99]

How high would you hang a 1000w HPS

Depends on how much heat you can remove. On average, 30" to 36"

 

[JSB99]

View attachment 4390949 View attachment 4390951 View attachment 4390952 View attachment 4390954

Yep, deficiency. Can't tell if it's the lights, but all your fans look light, which may mean you need to step up your nutes a bit.

 

[JSB99]

How high would you hang a 1000w HPS

With practice, you can get it closer. I usually have mine around 20" to 24". But my hood is isolated from the grow, meaning that I use external air flowing through my hood, keeping the heat from the tent.

 

[BlackTriangle1551]

Maybe it's just the lights you're using, but those plants look wicked pale. Can you post a pic in sunlight? Or are your plants as yellow as the pics show?
Looks indica dominant, so orange pistils at week five wouldn't be unheard of.

Plants are actually that yellow. I dont get it. Am I not using enough nutes ? The light cant be burning them. My light hood is cooled by an inline fan.

 

[BlackTriangle1551]

Depends on how much heat you can remove. On average, 30" to 36"

I'm at 74°F all the time. I have a UEI electrical meter and it came with a air temperature probe that is super accurate at measuring air temp for air conditioners. I use it for seeing temp at the top of the plants. Maybe they just really dont like the intensity of the light?

 

[JSB99]

Plants are actually that yellow. I dont get it. Am I not using enough nutes ? The light cant be burning them. My light hood is cooled by an inline fan.

No, you're not burning them. You would see them curl up, like mine are right now, because I outgrew my vertical space...

You are definitely not giving enough nutes. But don't just go crazy, and just start pouring it on by the gallon. Go to the manufacturers website and look up their feedcharts. Make sure you are where you should be. If it looks like you're adding the right amount, post what nutes you're using, and we'll figure out what's going on.

 

[JSB99]

I'm at 74°F all the time. I have a UEI electrical meter and it came with a air temperature probe that is super accurate at measuring air temp for air conditioners. I use it for seeing temp at the top of the plants. Maybe they just really dont like the intensity of the light?

I wouldn't go any closer than 24", until you know how your setup behaves. Mine aren't curling because of heat, it's too much light. I've got a couple tops of colas that are bleaching.

 

[JSB99]

What bleaching looks like from having the light too close...