Is this nute burn?

[manels1111]

I've never really had nute burn so not sure if this is it. Basically all the new growth the very tips are very light green/yellow.

1000w hps about 2 feet from the plants.
Ocean Forest Fox Farm
I starting noticing it about 5 days ago when I water them with 1/2 tiger bloom, 1/2 big bloom, 1/2 cha ching. They are lowryder #2 about 2.5 weeks old when I watered with the nutes they are now 25 days old in the pic. Temps range from 65 to 75.

What do you think?

 

[manels1111]

Oops here is the pic.

 

[cdmharley]

It could be nute burn or heat stress.. Either way flush them for a few days on a PH 5.5 - 6.0 are you on soil or hydro?/ the viens look raised on the leaves.
Thats all I could say really give them a flush and higher the lights a little see what happens..
CDMH.

 

[andy52]

looks like nute burn to me.just back off a little bit.i like to get my plants to where i see a little tip burn.kinda lets you know where your at.jmo

 

[massproducer]

yeah, flush em out, but you want to use a ph of around 6.5

What is the Ph of your run off?

 

[manels1111]

Thanks for the info. I'm in ocean forest fox farm soil. I just watered with PH 6.8 water and the runoff was 6.6ph. The only two things I can think of is either nute burn or possibly a fresh air issue. I have a big basement but I have my grow area tarped off which is about 4x4x8. I use a fan blowing on high on the side of the tarp thats pushing air into to my grow area. I also have an oscilating fan blowing air around. I would think thats enough fresh air?

I also am pulling air from outside the tarped off area through the light and back into the the non tarped off area if that makes since.

 

[manels1111]

Its only effecting the newest growth on most but not all the plants.

Today was my second watering with just plain water. If its still getting worse I think I will flush. Should I just flush with water if I need to or use the clearex flushing solution. I have some I was going to use at the end of the grow.

 

[andy52]

they will be ok,just go easy on the nutes