Any advice on light burn?

Tomzy17

Well-Known Member
My girlfriend phoned me while I was at work to tell me that my plants leaves the tips of them had started to slightly curl and the edges of the leaves are going a lighter colour green, I've had them under a 600w HPS air cooled light on 24/0 (not right under it as there only small) and they've all gone like it,
Any advice on what to do?
 

dannyboy602

Well-Known Member
My girlfriend phoned me while I was at work to tell me that my plants leaves the tips of them had started to slightly curl and the edges of the leaves are going a lighter colour green, I've had them under a 600w HPS air cooled light on 24/0 (not right under it as there only small) and they've all gone like it,
Any advice on what to do?
Sure it's over exposure? That's easy to fix...just dim down your 600 watter...if you can...if not raise the light.
 

chemphlegm

Well-Known Member
My girlfriend phoned me while I was at work to tell me that my plants leaves the tips of them had started to slightly curl and the edges of the leaves are going a lighter colour green, I've had them under a 600w HPS air cooled light on 24/0 (not right under it as there only small) and they've all gone like it,
Any advice on what to do?
you're spoon feeding here.....

uhhhh, I know....raise the lights?
or uhhh, lower the plants? or ummmm, bend the tops over and tie them.

(its really cold in my room, any suggestions?)
 

Tomzy17

Well-Known Member
I've raised the light a bit more and moved the plants back a bit, weren't as bad as I thought it was gonna be.
Seems like a few spots of it.
Thanks for the tips
Apart from the few spots of yellow what are your opinions on how they look?
 

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Jypsy Dog

Well-Known Member
Those plants need some love. Need the feeding info B4 anyone can help you get them happy. Soil, food, how often. Temps, humidity. All the important stuff.
 

Tomzy17

Well-Known Member
Those plants need some love. Need the feeding info B4 anyone can help you get them happy. Soil, food, how often. Temps, humidity. All the important stuff.
There in a fertilised soil the hydro shop advised as they'll have all the nutes they need till flowering it's called PLAGRON glorious green growmix, temps currently at 79.3 degrees been floating in between 75 and 82 since I got them and theyre being watered with Evian water at PH 7 every other day have only had them since Friday Any advice would be great help
 

Jimdamick

Well-Known Member
I've raised the light a bit more and moved the plants back a bit, weren't as bad as I thought it was gonna be.
Seems like a few spots of it.
Thanks for the tips
Apart from the few spots of yellow what are your opinions on how they look?
What type of soil, what are you feeding them (they look hungry) what size pot (they look small)
 

Tomzy17

Well-Known Member
What type of soil, what are you feeding them (they look hungry) what size pot (they look small)
PLAGRON glorious green growmix fertilised ,
Haven't fed them nothing but PH water as the soils supposed to have enough nutes? and only small pots as they're only small cuttings I've only just got them Friday, putting them in these pots saturday if they grow enough if not a week Saturdayimage.jpg
 

Jimdamick

Well-Known Member
There in a fertilised soil the hydro shop advised as they'll have all the nutes they need till flowering it's called PLAGRON glorious green growmix, temps currently at 79.3 degrees been floating in between 75 and 82 since I got them and theyre being watered with Evian water at PH 7 every other day have only had them since Friday Any advice would be great help
PH is too high, bring it down to 6.3, and get ready to repot into their final home
 

Jimdamick

Well-Known Member
The soils PH is currently at 7.6 do I just dilute PH DOWN and feed with that to reduce soils ph?
Use PH down to bring your water to 6.3, as 7.6 is way high. How do the tips look, are they burning? The soil might be a little hot for a young plant. How was the root system when you put it in your soil? Do you have a PPM/EC meter?
 

Tomzy17

Well-Known Member
Ok and The tips look fine it's literally the first few leaves on about 5/12 that are slightly burnt the roots were about 2 and a half inches long give or take.
I also just read the soil bag I got it wrong there's enough nutes for the first 3 weeks what would you advise to feed them after that? And no I don't
Use PH down to bring your water to 6.3, as 7.6 is way high. How do the tips look, are they burning? The soil might be a little hot for a young plant. How was the root system when you put it in your soil? Do you have a PPM/EC meter?
 

Jimdamick

Well-Known Member
Personally I don't like pre fertilized soil, as you don't have any control over your nutes, you are relying on what that soil manufacturer thinks is good for your plants, and all plants are different
I would place my light at 30" above your plant, and after you set them off into bloom (4 to 5 weeks), start of with a PPM of around 700 of a bloom food, Advanced Nutrients make good products You will need to get a meter at some point, maybe now would be a good time so you can test you runoff, and make adjustment as needed
I would recommend one that reads both PH and PPM. What might be advisable is just get some standard potting soil, and mix that with the soil you have now when you repot, just in case your soil is too hot.
I
 

Tomzy17

Well-Known Member
I get what you mean, i have just this second ordered a cf/ppm/ec nutrawand, as I've already got a PH meter and is there any specific potting soil you could recommend? And what you think I should put the light 30 inches above my plants now or when they go in the big pots?
Really appreciate the advice
Personally I don't like pre fertilized soil, as you don't have any control over your nutes, you are relying on what that soil manufacturer thinks is good for your plants, and all plants are different
I would place my light at 30" above your plant, and after you set them off into bloom (4 to 5 weeks), start of with a PPM of around 700 of a bloom food, Advanced Nutrients make good products You will need to get a meter at some point, maybe now would be a good time so you can test you runoff, and make adjustment as needed
I would recommend one that reads both PH and PPM. What might be advisable is just get some standard potting soil, and mix that with the soil you have now when you repot, just in case your soil is too hot.
I
 

Jimdamick

Well-Known Member
I get what you mean, i have just this second ordered a cf/ppm/ec nutrawand, as I've already got a PH meter and is there any specific potting soil you could recommend? And what you think I should put the light 30 inches above my plants now or when they go in the big pots?
Really appreciate the advice
Keep it at 30"-36" for your entire grow, to get as much light spread as possible and to reduce the heat to your plants seeing as you are using a HPS fixture.
Fox Farm makes good potting mixes, and you can get it on Amazon if your local store doesn't sell it.
https://www.amazon.com/dp/B001I49Q98/ref=asc_df_B001I49Q985165110/?tag=hyprod-20&creative=394997&creativeASIN=B001I49Q98&linkCode=df0&hvadid=19810629204
If you have any other questions, you can PM me directly and I will try to help.
I am watching your thread now, so keep asking questions and your at the right place.
Peace
 
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