I need some help with my plants. They appear to be dying at the moment and i cant figure out the problem. (btw this is my first grow) Plant appearance: yellowing spots/yellowing of new growth/yellowing young leaves (rest of the plant is light green), curled down leaves "aka eagle claw", stunned growth, purpule/redish edges of young leaves, plant seems dry wont suck up any water, this has been on going and progressing to worse for the past 8-10 days. (also there are 3 plants that are perfectly fine plus a few more smaller ones that are perfectly fine as well so my conclusion is that something is wrong with the feeding and not an atmospheric issue.) 1. Strain: OG KUSH 2. Growing: indoor 3. Growing Medium: Pro-Mix soiless mix HP 4. What stage of growth: Vegetative day 71 (i was going to switch them to flower on day 60 but i seen the plants getting sick so i delayed it) 5. Lights: 6 MH 1000W (about 2 feet away from plants, definetly not the issue.) 6. Ventilation: 7 wall fans plus 2 12" max fans intake/outake (again i dont think this is an issue) 7. CO2: not at the moment 8. Growing Pot: 7 gallon airpots with plenty of holes for great drainage and air intake 9. Nutrients: Holland Grow - i have used this brand that a local hydro store makes up until this happened (thats the reason i stopped using it and bought a commercial brand Green Planet) personally i think this nutrients i used was to harsh since i was feeding them around 500ppms(ECx700) fluctuating the ph from 6.1-6.6ph and at the low dose tips still burned on lower leaves and slightly on middle and upper. *The problem im experiencing seems to be from nutrient/ph issue. I thought it was salt build up originally so i leached the soil with about 15+ gallons per pot. It has been about 4-5 days since the leaching and it seems to be progressing to worse rather then better. anyone? if i left any information out please feel free to ask. also here are pictures of the plants and everything. The lower quality pictures are more recent and the higher quality pics are from when it started.