Hi,
More details on the cooling fan used.
Use a commercial cooling fan before but then decided to use a computer casing fan instead. The commercial cooling fan is a bit noisier and heavier.
Manage to get around 25ºC lowest to 29ºC highest. This picture was taken around 2.00 pm (26ºC).

Every 3-4 days, I have to top up the water lost due to the water evaporation (1-2 inches).
Best Regards