Just bought a Chugger Pump for a new 10 gal. setup and noticed Austin has a special on March 815s ($30 in future credit). Convince me I need another pump : )
you definitely want...er need one. I want a second one for fly sparging & so I can CIP two vessels a time.
Two is enough for my needs at the moment, but a lot of systems use three. If you want to brew without messing with QDs during the process, and you want to recirc on all vessles, you'll want three. I used to use one with a system of manifolds. Sucked because of noticable heat loss in the maniolds.