I have a 2 fan setup in a 200L tank. Ambient in the room is between 30 and 32 C with some ventilation in the room. Without any forced cooling, the tank water used to be around 29~30C which was quite uncomfortable for my poor little kids. I used to leave the top filter open and run the ceiling fan on to cool it but it dropped only by 1 C with the natural setup. This however has a drawback of evaporative loss water quality deterioration. With ISTA fans on for 24 hrs, the tank temperature is brought down to about 27C and not needed to leave the tank open.This is also built very well and setup is very smooth.Indiefur sent the order well packed and was safely delivered in 10 days from the order so happy with it.Only lag is the order confirmation takes some time and could be improved, but hey, I have been buying from these guys for a few years now so I have no complaints with a minor delay.
