Thor, or should that be Zeus?

[Chaz]

I would add a 2nd pump to circulate through the spindle then hook the chiller to a thermostat like this


A pond style water pump will work fine I have a box of 20 of them I can send you one for free if you want and will use less electricity than the pump in the chiller.

With a reasonable size res of 20l's the chiller will only need to run a few minutes in an hour.

Thanks, appreciated however have bought one already. Will test it tonight and see how it runs.