Any advice? See my plant

StifflerBen61

StifflerBen61

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Any ideas what might be wrong with this auto? It's at day 43 under a 600 watt super HPS.
 

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i have a problem here my plants are over 6 foot tall my light is at its highest point buds are starting to burn up top what should i do
 

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StifflerBen61 said:
Any ideas what might be wrong with this auto? It's at day 43 under a 600 watt super HPS.
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Need more information. What's the setup? Feed schedule? Temps? Has there been any sudden changes in temps? Like is it really cold during lights off or anything?

Also better pictures would help.
 
TopDogTHC said:
Need more information. What's the setup? Feed schedule? Temps? Has there been any sudden changes in temps? Like is it really cold during lights off or anything?

Also better pictures would help.
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4x3x5 ft tent, 600 wat HPS, currently running big bloom, tiger bloom, and foliage pro. I just upgraded from a smaller tent and some of my plants got light burned. Will they recover? I will post pictures tonight! Thanks bro
 
They just look really droopy, could be a number of things. How often are you feeding? Are there burned tips or discoloured leaves?

What's drainage like?
 
combined with the description it looks like light stress to me, do they perk up after the lights first come on or do you run 24/0?
 
hotrodharley said:
Light as far up as it can be raised, keep air moving but don't beat the crap out of the plant. Have you been giving nutes?If so how much and of what?
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Been doing big bloom at full dose, tiger bloom at half dose and foliage pro at half dose. The past two waterings were only water as I wanted to see if it was a nute problem. The larger lower fan leaves on all the plants are turning yellow, I pulled those off (2-3 leaves per plant). Here are some other pics from now along with my ventilation setup.
 

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Do you have a fan going?

It looks like it only affects top growth of the plant. I am thinking it is heat related. Is your room dry?

Is there any way we can get a pic with a cfl or natural light?
 
hotrodharley said:
They need a feed including Magnesium.
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Here are some close ups of problem areas under room light.

Also is a pic of my biggest plant currently at day 44. Nirvana short rider
 

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The bleached leaves at the top of the plant is down to the hood beeing to close to the canopy
 
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where is the thermometer located ? looks like heat stress .... but at the same time a very aggressive feed is being used .... personally i would have them on 1/4-1/2 strength grow.... about 1/4 bloom .... micro... and cal/mag but thats just me ..... FYI if the plant is still getting taller its still in veg basically
StifflerBen61 said:
77-81 when light is on
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