Nutrient Burn? Potassium Deficiency? Please help my WW!

I've been growing a single WW plant in an aerogarden, it's about 5 to 6 weeks into flowering. the pump itself doesn't actually run I have two airstones inside of the chamber and just use two lights along the side and the actual aero garden light up top. I think the plant itself grew too close to the light and so what I'm seeing is nutrient burn, it's on the main branch right next to the top bud. I'm sorry for the terrible photos, I dropped my digital camera recently and it ruined it so you kind of have to stare to see them. Also judging by a picture of one of the fan leaves it looks like it would be nute burn too. Do you think that's what it is, or do you think it may be a potassium deficiency? I'm a first time grower, and next time definitely investing in a better set up at my local hydro store. for nutes im using botanicare pure blend pro bloom 2-3-5 for hydrogardens. Temps fluctuate between about 74 to 79 sometimes varying by a few additional degrees and around 36% humidity. Temps and humidity have never changed since it sprouted.

bumping, i hope my baby is okay.

nute burn, flush it

is it possible to dilute additional nutrients by just adding more water to the chamber? or do i just have to drain it all real fast and then refill? feeding correctly has always been hard for me it seems. i've usually been doing like 35-40ml per gallon every 3 to 4 days. because the chamber on a aerogarden is only a lil over 1 gallon and the plant seems like it drinks a gallon in 3-4 days. thank you for your help. =)

Also get a ppm meter it allows you to control (fine tune) how much nutes your giving your baby. It's like a real child you want to get what you need in order to fully take care of her so you don't make her 200 lbs over weight before she is 10 and dies of a heart attack in gym class when she is 12.

Summary of crazy rant: get and use a ppm meter.

yes looks to me like nute burn also.. what your should do is flush with plain water for a few days to reverse the burn then use a mild solution.. so to answer your ? about adding water no! it is best to drain and start from scratch.. also what is your ph??

looks like nute burn. b sure to check and correct the ph of fresh water you add! also u could use some type of salt leaching solution like clearex or flora kleen.

My PH is always right around 6.0 - 6.2 and I test it weekly. Also, what's an acceptable PPM range? I've considered picking up a meter as well because even though it's worked so far it's not exactly the best to just feed them a set amount every 3-4 days I hear like I've always done. Again I thank you all for your knowledge.