Hi guys I'm looking to pick a few brains a family member is in the oyster farming business and because of the good weather in the summer he lost a lot of stock so his plan for next summer is to build 2 large tanks to put the oysters in during the summer he needs to chill the water to 14 degree c so he is looking for me to sort some kind of cooling so I am trying to think of the best way of doing it. I was thinking of just getting a water chiller a connecting that or putting pipes in the tank and connecting a condensing unit with a agitator in the water . Has anybody any ideas or know of a better way . Cheers