Yesterday, I purchased my first aquarium from PetSmart. It is a top fin 20 gallon tank that came in a starter kit with a filter, chemical conditioning, ect. I set the tank up easily, conditioned the water, added the gravel and decorations and put in the thermometer that came with it. I ran the tank through the night with the light off. Now the thermometer which is a thin plastic one that lights up numbers in multiples of 2 depending on the temperature. When I checked it the numbers 80,82,84 where all lit. From what I’ve read, for freshwater tanks it should be anywhere from 72-80F. The tank is near a window, which is always closed a no light gets through, a ceiling fan that runs fairly fast, and an air conditioning vent. I live in Texas where it gets very hot during the summertime like this, but I guess I just need to know how to cool it down and keep it cool. By the way, when I do get fish I plan on getting a rubber lip pleco, a ghost shrimp, a mystery snail and maybe one other fish. Also should I probably go buy a new thermometer because this one is kind of a cheapie. Thanks in advance 
Oh and I’m not using a heater because I was told not to by the person at PetSmart because of the already high temperature.
Okay thanks for all the answers, I got a new thermometer and it turns out the temp is at 79, so the old thermometer must have just been crappy
Posted in Shrimps
Tagged 20 gallon tank, air conditioning, Aquarium, ceiling fan, conditioning, F. The, fin, fish, freshwater tanks, gallon, ghost shrimp, gravel, kit, mystery snail, petsmart, starter kit, summertime, tank, Texas, thanks in advance, thermometer, vent, yesterday
