how to keep aquariums cold?
its insanely hot where i live right now and i checked my tanks temprature yesterday and it was around 40 degrees in each of my tanks which include tetras/kuhli loaches which is obviously really bad and i got scared so i just changed about 40% of the water in both tanks, my fish are okay now but the temprature went up again (about 35 degrees in each tank) and i dont know how to keep it cold
i did turn off the heaters yesterday as they were still on