The holes, which I think you're concerned about, are definite signs of something have their lunch at your expense... I'd grab some Dr. Zymes (it's organic and can be used up until the day of harvest if need be) and spray top and bottom of leaves... it will take care of almost ALL pests so there's no need to identify exactly what's chewing there. Spray it just before lights out....
And although it has nothing to do with the holes, your PH really IS too high... you want to get that down to somewhere between 6.0 and 6.5 or you're going to have a few other problems!
Good luck!