Yellowing and necrotic spots (got pics)

So basically the plant has been getting pale, and a lot of leafs are getting yellow, then necrotic then die completely. I have taken off a lot of dead leafs. I figured (with help from here) that the PH was probably too low, and i have put lime in the soil to try and better the situation. Its hard to tell if it has worked. But at the very least the yellowing and necrosis seems to have slowed down or stopped. But im not sure what to do now. Got pics. Any ideas? You think i will make it to harvest with a decent product? (Soil, afghan skunk, ph in runoff water 6-6.5~, 400w hps, ok temps, dolden label chem nutes)

Things that cause this in order are 1- ph is out and started flowering with ph issues. 2- moisture stress, you let the soil dry too much between waterings 3- stress, eg heat burn, light burn ,wind burn(outside) etc.

*BUDS said:

Things that cause this in order are 1- ph is out and started flowering with ph issues. 2- moisture stress, you let the soil dry too much between waterings 3- stress, eg heat burn, light burn ,wind burn(outside) etc.

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Thanks. I think (and hope) its the pH, and that my lime treatment will work. pH seems to be in the 6.0 - 6.8 range now. It has dried out two times. But it never died. Do my girls have any chance of producing, or will they die?