Chillers

[Archerfish]

Back to the original question - I have never encountered someone who used a chiller to reduce temps but as small a margin as you are aiming for. I always think of tanks with condensation on the other glass in summer with chillers. I'm curious to see if anyone here knows of any 'subtle' chillers of that sort.

You are spot on again GaryE! Last summer, condensation occurred multiple times depending on how much evaporative cooling was introduced. Condensation went away in the evening when ambient cooled and the evaporative cooling was discontinued. You actually asked the question I should have asked. The name/brand of a subtle chiller to reduce the water temp a few degrees. Thanks!

 

[Archerfish]

Interesting problem. Exchanging water with another tank inside the dwelling? Is you municipal water cheap? stick a radiator in the tank and pump municipal water thu it?

That is an interesting idea. I would need to recirculate the water some way and that leads me back to a chiller.