6 weeks into flowering Whats Going Wrong!? Help!

I attatched some photos off my Blue Venom. It is 6 weeks into flowering and for the last 2 weeks every leaf has been dying. It started with the fan leafs then moved to the bud leafs. The buds are still looking good for the moment but pretty soon every leaf will be dead. I have it under a 600 HPS, I thought it was nute burn but the plant next to it has been getting the same amount (using Holland Secret Nutrients) (and its in fox farm ocean soil) so I don't think it's that, I flushed it and have just been giving it water but it still is happening. My two thoughts are a salt defiency or to much salt I have no idea I can't figure it out this is my first grow. Thanks !

Get a better picture man that is horrible.One without the HPS

My bad I was lazy the first time

try posting this in the plant problems section, not sure whats wrong, but something is definately killing your plant

Yes, could be pottasium def. Anyway tell them your temps, what soil are you using and what have you been feeding them and how often.

Any idea how much you've been feeding on top of the FF?
Looks like heavy on everything, but especially P and K.

i think ff is hot to begin with. you just added too much on top of the hot soil. your six weeks in and theres nothing you can do now. just ride it out.

Flush her now. You only got a week or 2 to go.

BigSteve.

dannyboy602 is right, FFoF is hot (high ppms), had lots of burnt tips and leaves using it (especially with hydro based nutes, tho you can still use them if you know what you are doing --keep the ppms low),

personally--after adding a couple extras with FFoF, i just water with plain RO h20~ o yea, CTs also.

Nutrient burn. Now probably locked out.

nute or heat burn.

flush the medium with water, the same amount as the container holds then let it dry out for 5 days

I had the same thing happen to me. I flushed it and was able to get a small yeild. What i did notice after harvest is it was rootbound like a bitch. Just a thought take a look.