If I wanted to build an aeroponics system using 8 of these misters (i believe they use 1/4" tubing and operate up to 30psi) http://store.gardentechonline.com/shop/294/ fed from a bottom reservoir, Im looking for the cheapest pump that can provide enough pressure for each mister to have a good solid spray (no wimpy spraying allowed!). Ive been looking at some 12v diaphragm pumps but i wanted to get yall's opinion. Heres one im looking at http://www.amazon.com/NorthStar-Volt-Demand-Diaphragm-Pump/dp/B002VMDFLQ but that could also be overkill