My hydroponic plants are dying. ?

Saturday, April 17th, 2010 at 11:46 am

I am new to hydroponics and have a 4 site drip feed system that i built my self. My plants are wrinkling up and drying out, the roots are getting completely wet and i have a timer to come on for 15 minutes every hour . I add the nutrients as directed on the labels, which is General Hydroponics Flora series. Well when i add the nutrients i check the pH and set it to about 6.5-7.0, and like after a day or so the pH goes high on it's own to about 8.5-9.0 and the water get a dirty brown color like rusty. If anyone has any help for me in fixing this problem i would really appreciate it.

Thanks, BIG RED