what is an economical way to cool water in a 45L tank? i want the water to be as cold as possible. now the water temperature is 35c.
- if i get a cheap water cooler like this one
, then connect the cold outlet to the tank and put a water pump in the tank and send it back to the water cooler? if yes, can you help explain it?
- or, these cheap aquarium coolers
, are they useful? how low can they get the water down, if it is 35c ?
- another way?