Leaves curling down, Need Advice, PICS

Randomly my leaves just started curling and the fan leaves are feeling pretty crispy. The two strains in the pictures are Grand Daddy Purps and Ice. I keep my temps around 75-85 and humidity between 30-55%. Im growing in a mix of happy frog and Fox Farm ocean. This is in my veg tent and i have a 400 Watt Halide. I water every 5-8 days depending on conditions with the reccomended amount of "Grow" and I just started using diamond black, and CaMg with the "grow" by General Organics. The plants are about 5 1/2 weeks into vegging. I had a spider mite problem and have been consitently spraying foliage with azamax as well as 2 soil drenches. I stopped using Azamax about a week ago when spider mites dissapated. There is still a slightly strong smell of the azamax in the tent :/. I heard Azamax doesn't cause any issues with ph and you can't really over do it with azamax. I would love to know a solution to the problem before its too late. The guy at the grow store told me to use some of their "tea" that they brew there with tons of micro-organisms in it for the plant to recover, and if all fails use some revive. Any advice would be greatly appreciated.

PS I know that the clones behind the GDP look terrible i'm getting new clones next week.

you said it already, def can spot the mite damage in 1st pic, while second pic looks like a ph issue got thrown in the mix. have you done a ph test? the mite scars dont seem to be too prominent, but the girls look sick. if the mites are gone, maybe switch from azamax to some einsteins oil, it is cold pressed neem and also a leaf shine=). but mites hate it , plants love it, and it protects from powdery mildew. good luck

the guy at the grow store said that ph shouldn't be an issue because im using organic nutes and am using the reccomended amount. He also said all the cheap ph soil testers dont work, I'd have to spend over 100 to get a decent one. I'm thinking about giving them some of the "tea" tomorrow and if that fails i'll try the superthrive. Thanks for the quick response, more advice from anyone else would be great. The more knowledge the better!

I'd reconsider the PH advice if I was u

Ph is off !! Go get ph meter!

dude just buy a ph drop kit for testing your water not the dirt (like $12).. and then after you ph your water to 6-6.5 flush them girls

Heres some more pics of my setup, and of my plants. They seem to be getting worse? I've taken all of your advice into consideration, im buying a Ph tester today. Check out the new pics any more advice would be great!

nice little tent set up empire looks like you covered all your bases on the set up.. just get your ph under control