For me, it’s barely enough to just open the cover. On another aquarium, I’ve had to put a fan on it. This 25l aquarium went from 27°C down to 25 with the fan.

  • HalasEnglish
    2·
    2 years ago

    I have 240l with Axolotls and set of fans was doing barely anything. I got a special water cooler that stands between filter and the tank. Loud as hell so not an option for a bedroom, 400 EUR, but keeps the little rascals below 19 degrees C even in the top of summer heats.

    There are various sizes available, so for smaller tanks some cheaper option would be available

    • MawokaOPMEnglish
      2·
      2 years ago

      I think that I’d go the diy route: Computer water cooler loop cooling the aquarium water: Either with these peltier cooling things. That’s just an idea, it’s not tested. Maybe sb else has done that somewhere.

      • HalasEnglish
        1·
        2 years ago

        Good luck and do share your solution once you have it :)

      • leftascenterEnglish
        1·
        2 years ago

        That’s just a heat exchanger with the surrounding air.

        • If you need to go under air temp, anything else than a cooling system (think fridge) won’t be enough.
        • if you need to drop close to air temp, afaik the best cooler for a water tank is surface evaporation. There might be a diy way trying to increase evaporation (water circulation on a ramp with fans blowing on it or such).