How do you tell if there is precipitation in resevoir, from what i learn on these forum its when the plant rejects certain nute. coorrect? My res is a little foggy right now and i think its that.

I haven't heard that term used here before. Thought that was rain. If your rez water is cloudy I would change it out. Your PH levels will tell you if you have nute lock out. In the faq's there was a chart that shows PH too high or too low and nute lockout. Foggy ? Sound like something growing in your water. What kind of water are you using ? Tell us as much as you can, nutes and all. It will get much more help. More info will bring in the masters.

i am using gh 1-3-1 application, a high P-K additive, and my ph is at 5.4, i keep trying to top it with water to raise my ph to get it to 5.7 then it drops back to 5.5 or 1 or 2 points. I'm at the final week and a half of my grow, my buds are looking super soorry i dont have a cam but its the best grow i ever grew its looking in the range of a ounce per tree. I am doing SOG method.

It's all about tuning it in. I would go to just PH water and flush the last week or so. Maybe yor water temp is too high. 68 degrees is best, never over 70. A plastic soda bottle foze can bring rez temps down. I was getting very good results with lucas formula. Is your water RO or distilled ? What size light ? How many plants ?