Identifying a problem pic included

Having an issue in flowering using and ebb and grow system with the Lucas Formula strain is strawberry, ppm 850, PH around 5.8 using 1000w sodium hopefully the pic uploaded anyone with a possible solution? much appreciated

looks burnt to me m8 ...

yup looks burnt, 850 PPM may be a little high for this lady.

regards,

brunt, and some ph issues, not enough swing most likely....

I would nto go above 800ppm in dwc... I say back down to 750 and see what happens.. disregard the old growth, look at new...

raise your lights a bit.. another gut feeling thing on this one..

whats your room temp. Mess around with 80f, but only if you can keep water cool.

Room temp is around 83 it's in a grow tent the same set up was in the veg tent and they did fine, curious

it looks like nutes

Is it on every plant? Is it only on the oldest leaves? 800 PPM is pretty low to be having nute issues unless perhaps it's a deficiency.

I'll get back to you it a grow at another house i have to go and get some better numbers and better pictures

when did you last flush it? looks like could be salt build up.

I doubt it's nute burn at 800ppm, I'd go with salt build up or ph problems. 'corse depends on the strain, some maybe can't tolerate high ppm. I have a WW at 6 weeks flower feeding 1500ppm with no probems at all.

i see everyone is 50/50 on the ppm level. Personally I know nothing about lucas so I couldnt say where to keep it. I do know you need to flush your entire system and give it a reduced ppm level for a few days untill they bounce back. superstone mentiones salt build up and I have to agree. I can see it clearly in the pics.. fresh water flush helps, but with salt build up its best to use a flush solution.. good luck with that
Cheers~Reggae

Just curious but is it a drip system? Is it just the lower/older leaves or does the new growth show this as well?

I ran a waterfarm system for a while that had really similar looking issues and the new growth would be green
and healthy looking but the lower stuff was very crispy like it was burn. Turns out I had too much splash on
my lower leaves and they were frying from salt buildups on the leaves over time.

Not sure if this is anywhere near helpful, but the situation looked familiar to something I had experienced.