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Old 09-13-2004, 07:21 PM   #1
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Changing water and keeping salinity level...

Let's say my aquarium has a specific gravity of 1.023, and I do a water change. Let's say I drain 5 gallons of water out of my tank. When I go to add that water back, would I make 5 gallons of saltwater that measured 1.023 and then add it, or would the replacement water have to be a lower salinity?

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Old 09-13-2004, 08:05 PM   #2
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We always make the replacement water as close to the tank in salinity and temp as possible.

Good luck! Kat
90 malawia cichlid
55 planted tropical community
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Old 09-13-2004, 09:32 PM   #3
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kat is right the replacement water should be the same salinity and temp as the tank water. I tend to mix my water 48 hours in advance. then if I didn't add enuf salt, or added too much, I can correct it, and still have a full 24 hours of mixing and stabilizing.

Since you top off for evaporation with pure water (preferably distilled or R/O) rather than sea water, your tank salinity *should* stay constant.
Former advisor and planted tank geek...life's moved on though.
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changing, level, salinity

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