I was wondering if anyone has a way to auto inject liquid ferts? I was thinking of putting a submersible pump into a container filled with the fert of choice plugged up to a timer. The only downside is, I cannot find a timer that turns on and off in a matter of seconds, the lowest I can find is minimum 1 minute on time. Any ideas? Suggestions? Has it already been done? I remember reading about something like this long ago but I never saw the completed project and cannot find the thread.