HELP! Nute burn?

[Tedtheclown]

What you guys think, nute burn? My ph is around 6.5 ish
I did change my last bottle of water to a higher nutrient ratio, im thinking thats what caused it. It got a lil warmer today and humidity got higher than what I normally use.
The leaves look a lil darker than normal. Any info would be appreciated.

 

[Rwise]

How about a pic or three of the whole plant. IF its just the tips I might not worry about it.

 

[Tedtheclown]

Overall ot looks pretty healthy