i agree with everyone on that the fogger will heat up the water, but what i did is put it on a timer. because of the timer it gives a chance for the water to cool down, and this will prolong the diaphragm. i know it sounds odd but i have built many paludariums and i have only had one of my tanks where the tank needed a new fogger, but that was after 2 years. the times where. 15min-on 2hr-off. 15on-3hr-off. 15on 2hr off. 15on 5hr off.