I wouldn't suggest doing either. But using a diatom filter that filters to 1 micron would be better IMO. Dinos are generally 10 microns and bigger.
In the past I'll doing a periodic typhoon in the tank and use a vortex diatom xl filter ala PaulB. This has probably been a factor in keeping the diatom population unnoticed in my tank.
Evaporation is a much slower process and not nearly as violent as boiling creating steam. But risk is possible.
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Current Tank Info: 180g mixed reef w/ a beananimal overflow to a dolomite RRUGF. | 20g long G. Smithii Mantis Tank
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