Tube Leaves... AH! Help!

hey whats goin on, Iam about 2and1/2 weeks into flowering, using water with about a 6.5-7.0ph in soil, foxfarm tiger bloom nutes, and Iam having this problem with the fuggin "tube" like leaves. I concludcized that the problem may be Nuet Lock so i flushed before the light went off tonight and Iam sleeping with my fingers crossed.
If anyone know more than I do pleas give me a shout out
pece

wll the plant seems to be doing alot better this moring all perky and ish, however I was wondering If the tube growth the has occured with go away or do I just have to wait for the new generation of leaves

Could be 1 of three things...to much heat, over feeding or overwatering

I assumed it was overfeeding so I flushed it last night, most of the leaves are still the same but it looks like a few of the might come back around