Best investment I ever made, ATO. Not sure I would go with drip, little dicey on Nano sized. Best thing, find a friend someone you trust, show them quick like where to add, how to add and show them how to feed, then tell them only 1/2 of that. Baby (fish) sitters mostly over feed anyway. Then offer a little cash. We have a dear friend watch my tank and 100lb dog while we are gone, we pay her...