- Joined
- Aug 12, 2018
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It does evaporate very fast-- I have it in a hot room, and in addition to the return pump nozzle pointed at the water's surface, I use a large air stone. So I'm constantly dumping water in the back. Of course, if it wasn't my fish QT, but a main tank, I guess I would use an ATO. (I have one on my IM 20-gallon).

