High dkh after water change?
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Flippers4pups
Fins up since 1993
That seems like to me a bitter pill to swallow if I was to keep saltwater on hand all the time, say a very large system and needed a larger amount for water changes and back up. Having to use it all within two hours.
With that said, Redsea's recommendation is to not heat the mixing water above room temperature and only mix the water for a couple minutes to a couple hours. At that point to stop mixing it. It can be stored for weeks sitting still if covered before use. If there is any precipitation, they say that only two percent of the salt is lost to precipitation and is perfectly okay to use. If added to the tank, it will mix with the tank water and clear up.
So, it can be used later than two hours or even cloudy. Respectfully.
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Flippers4pups
Fins up since 1993
Randy Holmes-Farley
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Not more than a few minutes.
Randy Holmes-Farley
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Some members tried to reproduce that at home at failed, so it does not always happen. It may depend on your home air and how much heat your pumps put out.
What is really strange and disappointing is that Red Sea literally has mutually exclusive statements within their own directions (at least as a hobbyist would follow them: "mix vigorously without aeration"), and when i asked their tech rep what it meant, got an answer that was technically inaccurate.
High alk mixes tend to form precipitates of calcium carbonate, and that is worse at high pH and high temperature. That effect is much worse in new salt water than the same mix in a reef aquarium where organics can halt precipitation by getting onto growing calcium carbonate surfaces.
