You will need
  • thermometer for water;
  • - a plastic bottle of water;
  • - fan
  • - chiller
Buy apartment air conditioning. This method will allow you to make a comfortable life not only the fish in the aquarium, but also to other inhabitants of the house. Of the disadvantages of this method worth noting is the high cost, the drying air and nemobilat the device itself. If you have multiple aquariums, placed in different places of the apartment, you will not be able to install air conditioning on each.
Will buy a special refrigerator for aquarium water. It's called chiller. The chillers appeared on the market recently. Their appearance is due to the fact that aquariums are increasingly equipped with new electrical devices, like filters, lighting, pumps. These, no doubt, useful devices can heat up greatly and increase the temperature of the water. The main drawback of the unit is its price. The minimum price is $ 500.
Cool the water in the aquarium using bottles of frozen water. Pour water into a regular plastic bottle and put it in the fridge. When the water freezes, the bottle can be lowered in the tank.
Keep in the fridge was always full of bottles on shift, so will have to change them quite often.
Try to cool the water in the aquarium with the help of enhanced evaporation. For this you will need a fan. Aim a strong jet of air on the surface of the water. The airflow must be of such force that the water formed ripples.
Penetrate into the tank cap hole in two different parts. Their sizes should match the size of the fans. The holes fine mesh, so that the fish couldn't jump out.
Mount the fan over the hole so that the stream of air enters water at an angle of 45 degrees. This will speed up the evaporation, and the temperature in the tank decreases.