Leaves folding and hooking down

[newgrowguy]

Hey all. What a thrilling adventure it has been growing this first plant(all fantasy of course). My blueberry/white widow is in its 4th week of flowering, so cool to see buds growing for the first time, trippy! I don't have a camera for pics so please give this s try anyway. Here's the facts"
plant is in enclosed flower chamber 4'x5'x7.5', under cooltube, with in-line vortex fan, 12 in intake ducts, ave. temps between 76 and 82degrees, humidity around 40 %, oscilating fan. Light is 12 " from plant tops. Plant is 3 feet tall in a 5 gal container. I think I overnuted it. Some of the leaves near the top have folded and hooked down, the veins look lime green, and some lime green spots. A few leaves are crispy(that can't be good). This is an otherwise grogeous plant, with 15 shoots due to training.

These symptoms showed up a day after a watering. I think my mistake was watering with nutes every time I water. Here are the nutes:
FoxFarm Big bloom 2tblspoons/gal
nova pk 0-14-14 1/4tsp/gal
TigerBloom 2-8-4
a dash of epsom salts/gal

I tried flushing it yesterday but only used a gal of water. Can't see results yet today as I can't open chamber till 11am.

Whatcha think?

 

[NoDirtWeed4Me]

When I flush I use 2 times the amount of water as the volume of the container. Give that a try and then give it a break, cut back on how often you are giving nutes.

 

[newgrowguy]

So it sounds like nute burn to you? so that would be ten gals of water....sound right? Thanks for the quick response

 

[Urdedpal]

Humidity is also too low but tolerable, after your flush, let it dry out and just feed with plain water, then cut the nutes down by 30%. Last two weeks don't use nutes at all, older fan leaves will turn yellow and thats ok, you might want to leave a small bucket of water in the grow area to help raise the humidity but don't go over 65%.
Good luck with the grow and keep us informed.