I don't have a pump yet, but I am wanting to buy a new wort chiller. The shirron chiller says wort can be pumped or gravity fed, but my LHBS guy says it won't work without a pump.. Anyone use this chiller on a gravity feed? What are your results? Obviously I am aware of the benefits of a pump (faster circulation through chiller, etc) but it's not in the budget right now.. I can either buy a chiller or a pump.. The pump is no good without the chiller, so I am going for the chiller.