Well, since Cool Bloom has a double crapload of K in it, I'ma go with 'lockout' ftw!
Not sure if you've seen the troubleshooting form yet, but you should go take a peek; it's stickied at the top of this section.
In your case, my first assignment to you is:
Test the pH of the water coming out the drain holes of your pot when you give it a heavy watering with plain tap or whatever water you are using. Also, post the pH of your source water (you need both numbers).
Actually you must be in hydro posting up ppms. You gotta give us more clues like that or no one can help. Fill out the form...