Is this burn or def?? please help??

[bikerguy333]

so here are some pics of my white widow week 5 of flower.so i dont know what is going on everything was going good till the past week.Its under a 600 watt hps about 18 inchs from the plant.ph6.6 is what i water it.shes in ff soil.temp at 78 hum 50%.last watering was a good one just ph water.i was going 1 feeding 2 plain water with fox farm nutes they last feeding i gave her about 800 ppms i didnt think it was much but dam she not liking somthing if you have any advise please shed the light on me .thanks for looking

 

[bikerguy333]

so here are some pics of my white widow week 5 of flower.so i dont know what is going on everything was going good till the past week.Its under a 600 watt hps about 18 inchs from the plant.ph6.6 is what i water it.shes in ff soil.temp at 78 hum 50%.last watering was a good one just ph water.i was going 1 feeding 2 plain water with fox farm nutes they last feeding i gave her about 800 ppms i didnt think it was much but dam she not liking somthing if you have any advise please shed the light on me .thanks for looking

sorry i water with tap water comes out at 150ppm.

 

[scottish lad]

looks like same prob i got

 

[bikerguy333]

looks like same prob i got

That sucks hopfully somone will help us out.

 

[scottish lad]

hope so i put post up 2 so if any one tells me all let you know .

ps your 4th pic looks nice

 

[Majestic12]

I am only on my second grow, but I have run into the tips burning problem. I figured out it was too much nutrients. However I noticed you have burning near the center of the leaves and I am unsure if this is a different problem, or the same thing but just a severe case. Hope that helps.

 

[bikerguy333]

I am only on my second grow, but I have run into the tips burning problem. I figured out it was too much nutrients. However I noticed you have burning near the center of the leaves and I am unsure if this is a different problem, or the same thing but just a severe case. Hope that helps.

bump.help please

 

[BlueGrassOne]

If they are old orig leaves they may be yeilding their nutrients to the new flowers. Hope it helps.

 

[Majestic12]

It sounds like you should diagnose your plant. Keep all variables the same and change one thing at a time until the problem is solved. I would start by lowering nutrients by a smidge. If that has no effect, return the nutrients to the original level and move on to the next possible culprit. (lower ph to 6.4?) The damaged leaves will probably never return to full health, but pay close attention to further damage and how quickly the leaves burn.