How do I cool the output water from the water sieve?
Solution 1:
Water sieve has fixed temperature output at 40C = 104F, and temperature of the sieve itself or the feeding water or sand doesn't affect it. It's more like of a feature than a bug.
You can use this property for your advantage - just hook the sieve output to 1 aquatuner ( ideally by placing the aquatuner in an isolated chamber where also polluted water is stored) and you'll get nice clean water about 26 C which is nice for your bristle blossom farms