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Originally Posted by ThRoewer
I don't see how cryptocaryon can survive being boiled.
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It can't. In fact, boiling is over-kill, as studies have shown that the tomant (cyst stage) doesn't survive at 40 degrees C for one hour. However, I don't think anyone has studied what other possible negative chemical changes to water quality may occur by heating then reusing tank water. I would personally be leery of heating and reusing tank water.
Quote:
Originally Posted by ThRoewer
I would also do TTM under hyposaline conditions, firstly to reduce stress and strengthen the fish's immune system and secondly to reduce costs.
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You need to consider your energy costs for boiling the water, and for making the ice cubes to cool the hot water. If reducing cost is important to you, you may not be saving as much as you think.