WOW! I may have just figured something out...
I could stick a "T" in the pressurized water line just over the switch. Then hook a little air-pump up to the T. Just before powering up the switch (to turn on a tank filling pump), I could turn on the air pump for minute, just long enough to fill the tube with air, and hopefully reset the switch.
Kinda kludgey, and would send a few bubbles out the manifold, but it might work!
Steve - 33g reef and a 180g planted in need of a re-scape.