Crispy leaves at top of plant only. help! (pics)

[kung]

My plants are in about week 5 of flowering and my top growth looks like crap, the buds look fine and so do the bottom leaves.

I'm using the house-garden.us nutrients.

and i had ph problems a while back but that should be taken care of.

any help much appreciated!

 

[hobogrower]

Heavy ph fluctuation did you flush them. I think all you can hope for is healthy new growth don't over nute or let salts build up as a new indoor grower i take a very cautious approach to nutes and watering

 

[kung]

i have flushed them only with fresh nute water. not plain water... should i?

 

[lampshade]

Whats the pH of your run off water?

 

[kung]

i keep my ph at about 5.7, the run off is normally 5.5 and has been stable. its been about a week and a half since i had a bad ph problem with something nasty growing in my pump.

 

[lampshade]

i keep my ph at about 5.7, the run off is normally 5.5 and has been stable. its been about a week and a half since i had a bad ph problem with something nasty growing in my pump.

How much nutes are you using? They look burnt but it could be a crazy P def.

 

[kung]

I'm using the hydro nutrient from house-garden.us and their feeding guide. i am on week 6 of the 8 week schedule.

i am using all their additives as well... shouldn't their shooting powder take care of that?

 

[Jash1297]

how close is the light and what are the temps?

 

[kung]

70-80 f I try to keep at 75, 45-60% RH and they are in a 5x5 tent with a 1000w HPS and it is a little over 21 inches from the tip of the tallest plant.

 

[kung]

So should i flush with normal water anyway? would it hurt anything?

 

[Jash1297]

it wouldnt hurt anything and might be a good idea to try

 

[haze2]

Id flush but I dont think thats what it is. Is your light and hood vented? That looks like a heat issue to me.

 

[kung]

light hood has a can fan on it running 24/7 and a oscillating fan 24/7.... temps very rarely get over 80F

 

[haze2]

Then I would say you have to be locking out or burning with nutes. If you had great ph and atmoshere you would have nothing wrong recheck your ph levels.

 

[dj crane]

Useing "plain" water can never be bad as far as i know, assuming the ph is what you say it is. i could be wrong

 

[Jash1297]

I agree with the above post. it looks a lot like heat stress but if that isnt it I would start looking at your nutes

 

[kung]

Ok. i flushed them, and it makes sense that just nutes kept building up and up in my rockwhool causing them to burn. (i hope)

So should i just continue to water with the same strength nutes after i flushed them?

 

[lampshade]

Ok. i flushed them, and it makes sense that just nutes kept building up and up in my rockwhool causing them to burn. (i hope)

So should i just continue to water with the same strength nutes after i flushed them?

No reduced. Less is better with nutes. Start with 3/4 strength of what you were using and if you need to add more.

 

[kung]

do they look doomed? i'm worried my first grow is going to be a flop.

 

[lampshade]

do they look doomed? i'm worried my first grow is going to be a flop.

Your not doomed, you will get a harvest, and hopefully they will get back on track. Free bud is never a failure, Also its a great learning experience for your next grow. Good Luck, Lamp