I run a fine air-stone, on a timer 30-minutes before temp rises in room and for 4-6 hours depending on heatwave/weeks temps!
Yes, I get little more evaporation. Yet, no ich! No major stress from latest heatwave.
So I check salinity more often and/or add cup of buffered ro water to tank weekly.
***The bubbles just help move the water column helping heat to escape through blowoff at top of Uniquarium/Aio Area.***
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