HELP! First Indoor Grow, AND I THINK SOMETHING IS WRONG

Okay I have 5 girls ...

the bottom of each plant looks GREAT! its the NEW growth I'm worried about! The leaves on ALL the NEW nodes on ALL 5 girls are having upward cupping leaves, some that look like claws.... and on some of the new growth the leaves are WAY skinner and thinner than the previous nodes before it...

and one of my skunks the top node has some yellowing around the edges like maybe a nitrogen burn, I'm not sure!

I recently thought I had a heat stress issue... and raised my light ...light now hangs 24 inches above my tallest girl

Here is some environment info:

Light on:
Temp- 75*F to 78*F
Humidity - 55%

Lights off:
Temp - 68*F to 70*F
Humidity - 60 to 65%

I have a 600w mH light
4inch inline exhaust fan with carbon filter
inside a mylar tent

pH is about 6 on all 5 girls....soil grow

the cupping of the leaves may be from dehydration, sometimes they cup, or curl to conserve water. they look great though.

really?! The new node growth looks SO SKINNY compared the everything underneath it .... and one of my skunks and some yellow edges, that looks like someone took a highlighter and trimmed the edge of each leaf ....this is on the new growth only, nothing underneath.... and the leaves that are cupping look so dry...and they get mist with pure water at least every other day

your plants look great. a very healthy green. I'm thinking that your light may just be a little too close to the plants. I've had this same problem before, and once I moved the lights up a couple of inches, it went away. Like most growers, I like to keep my lights as close to my plants as possible. But there is definitely a happy point where they won't cause this issue. Good luck.

-S

yeah, this is a 600watt mH ....and it gets hot....I'm afraid to have it any less than 24inches above the tallest

obiebongz420 said:

the bottom of each plant looks GREAT! its the NEW growth I'm worried about! The leaves on ALL the NEW nodes on ALL 5 girls are having upward cupping leaves, some that look like claws.... and on some of the new growth the leaves are WAY skinner and thinner than the previous nodes before it...
and one of my skunks the top node has some yellowing around the edges like maybe a nitrogen burn, I'm not sure! I recently thought I had a heat stress issue... and raised my light ...light now hangs 24 inches above my tallest girl
Light on:
Temp- 75*F to 78*F
Humidity - 55%
Lights off:
Temp - 68*F to 70*F
Humidity - 60 to 65%
I have a 600w mH light
4inch inline exhaust fan with carbon filter
inside a mylar tent
pH is about 6 on all 5 girls....soil grow

Click to expand...

the canoeing of leaves usually is a heat issue. leaves that display the dreaded claw, can mean a ph issue, or nitrogen toxicity. sometimes a yellowing of new growth can be caused by slow photosynthesis. 600 watts 24" away is too far, and will cause stretching. in soil, i'd have my ph at 6.5.

Silky Shagsalot said:

the canoeing of leaves usually is a heat issue. leaves that display the dreaded claw, can mean a ph issue, or nitrogen toxicity. sometimes a yellowing of new growth can be caused by slow photosynthesis. 600 watts 24" away is too far, and will cause stretching. in soil, i'd have my ph at 6.5.

Click to expand...

i was thinking maybe nitrogen burn.... and some sort of moisture issue....

and as for my light height level...
its a 600 watt metal halide light @ 66,000 LUMENS ....

You really think my light is too high?

obiebongz420 said:

i was thinking maybe nitrogen burn.... and some sort of moisture issue....

and as for my light height level...
its a 600 watt metal halide light @ 66,000 LUMENS ....

You really think my light is too high?

Click to expand...

forget lumens, think heat! i use 1000 watts, and keep it around 13-15" from the canopy.

i think they look pretty good so far. a lot of times a nutrient deficiency or toxicity will cause retarded growth. how old are they? are you giving them nutrients yet? PPM? ph is good. there is a good possibility of it being nothing also. there are so many different types of ganga, each growing in its own way. this one may appear to be different to you but may be just fine. alot of times too new growth does look slightly yellow in appearance. genetics could also play a role, where did you get your seeds or clones from? heat can also play a role in this, invest in a good box fan or oscilating fan, put it level with the tops of your babies. keep a good airflow right above your plants and this will allow you to lower your lights without burnin your shit. i have 2 400 watt lights 8 inches above my plants. i have 8 wonder woman plants 3 weeks into flowering, going to be posting SOON so check em out.

my leaves looked like that before and it was heat stress. the temp in your room might be 78 but you need fans blowing it to your plants. put your thermometer at your plant tips and see how much it says. i did that and my temp was 90,not enough air flow i had

I say it is heat they look good to me

bluemystic51420 said:

i think they look pretty good so far. a lot of times a nutrient deficiency or toxicity will cause retarded growth. how old are they? are you giving them nutrients yet? PPM? ph is good. there is a good possibility of it being nothing also. there are so many different types of ganga, each growing in its own way. this one may appear to be different to you but may be just fine. alot of times too new growth does look slightly yellow in appearance. genetics could also play a role, where did you get your seeds or clones from? heat can also play a role in this, invest in a good box fan or oscilating fan, put it level with the tops of your babies. keep a good airflow right above your plants and this will allow you to lower your lights without burnin your shit. i have 2 400 watt lights 8 inches above my plants. i have 8 wonder woman plants 3 weeks into flowering, going to be posting SOON so check em out.

Click to expand...

2 of them are strawberry blue's, and 3 are skunk no.1

seeds came from attitude seeds

got a big box fan...

as far as PPM goes.....not sure how to do that

Yes, your light is definitely too far away. Here's the thing: You are not using the lumens that the light puts out to the fullest potential. Let's say you have your light 12 inches from your plant (which is exceptable, you just need to have a fan blowing across the tops of them, or have fans on your lights themselves), at this distance your plants are probably receiving 50,000 of those lumens (this is a guess, but more or less). now, if you move the light another 12 inches from the plant, you lose HALF...You're now down to only 25,000 lumens trying to penetrate your canopy. You need the lights as close as possible, not just because it causes stretching, but also because you want the plants to capture as many lumens as possible...ESPECIALLY during flowering. It'll be the difference between thin lanky buds and fat dense buds.

So, get some fans, and lower those lights dude. You'll be happy you did.

-S

obiebongz420 said:

i was thinking maybe nitrogen burn.... and some sort of moisture issue....

and as for my light height level...
its a 600 watt metal halide light @ 66,000 LUMENS ....

You really think my light is too high?

Click to expand...

Silky, I hate to say it, but that is a VERY BAD statement. LUMENS ARE IMPORTANT!!! heat doesn't cause our plants to grow...

Please read my previous post... As the amount of lumens decreases, the amount of light hitting the plants decreases as well... There for the plants are not getting as much of what they need from the light itself. Using your lights to their full potential is so important, and often overlooked by way too many growers. You want the lights as close to the plants as possible, without causing heat stress. My lights in general are never more than 8 inches away, and that's when I move them up. They start at 8 inches away, and then I let my plants grow towards them. Once they are almost touching the glass, I then move them up. I keep continual air flow going throghout the room, and across the tops of my plants to keep away heat stress...

In short, LUMENS matter!

-S

Silky Shagsalot said:

forget lumens, think heat! i use 1000 watts, and keep it around 13-15" from the canopy.

Click to expand...

snutter said:

Silky, I hate to say it, but that is a VERY BAD statement. LUMENS ARE IMPORTANT!!! heat doesn't cause our plants to grow...

Please read my previous post... As the amount of lumens decreases, the amount of light hitting the plants decreases as well... There for the plants are not getting as much of what they need from the light itself. Using your lights to their full potential is so important, and often overlooked by way too many growers. You want the lights as close to the plants as possible, without causing heat stress. My lights in general are never more than 8 inches away, and that's when I move them up. They start at 8 inches away, and then I let my plants grow towards them. Once they are almost touching the glass, I then move them up. I keep continual air flow going throghout the room, and across the tops of my plants to keep away heat stress...

In short, LUMENS matter!

-S

Click to expand...

I totally agree on the bad statement about lumens..... i may be new to growing, but I know how to research, and I know that lumens are extrememly important

well, i hate to say it but, lumens mean nothing! consider growing outdoors. do you think that there is "any" indoor lighting system that can come close to the output of the sun? i think we can all agree, there will "never" be a man lighting system, that can come close to equaling the output of the sun. as i said, as long as you can handle the heat, use as many lights as you can cram in an area!

Silky Shagsalot said:

well, i hate to say it but, lumens mean nothing! consider growing outdoors. do you think that there is "any" indoor lighting system that can come close to the output of the sun? i think we can all agree, there will "never" be a man lighting system, that can come close to equaling the output of the sun. as i said, as long as you can handle the heat, use as many lights as you can cram in an area!

Click to expand...

you said it yourself.... "as long as you can handle the heat, use as many lights as you can cram in an area!"

I would assume that by doing so, you are adding more and more lumens, meaning more and more light, closer to the power of this sun you speak of.... so I will agree that the more light the better, but this again is because of LUMENS....

if your not that concerned with lumens, replace your 1000w light with 10 100watt incandescent lights, watch how many lumens you loose as well as spectrum and see what your girls do....