lol....that switch is exactly what i need....much thanks G4fun. see im running a drip recovery system so right now my beauties are in 5 1/2 net pots buried half way in a 2x2' seedling tray, that in turn, gravity drains back into the initial feeding resv.since my current system is so small i dont even need a 2nd pump BUT after i go to a 12 pot system my needs will change as i will need like a 25 gl feeding drum so the smaller pump with that actuating switch will turn on whenever theres nuets to be recaptured. simple.