Mixed water.

Discussion in 'Water Chemistry' started by arthur, Nov 9, 2014.

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  1. arthur

    arthur Spanish Shawl Nudibranch

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    Aug 11, 2014
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    Its been 8 years since I started reefing so that question my seams silly. I have 125 mixed reef tank. Every 2 weeks I change around 20-25 gal. of water. For that I have 55 gal. tank. So after filing it up I have enough water for 2 water changes. I recently read a lot that it is not good to leave mixed saltwater stagnate. I mean without power head or some sort of water movement. When I do first change remaining 20-25 gal. stays in tank for at least another 2 weeks. I don't see any bad effects on my reef. What do you guys think? Is it ok or i should throw power had there? What is your experience? Thanks.
     
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  3. Corailline

    Corailline Super Moderator Staff Member

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    It is a dry heat, yeah right !
    A container with flow and O2 is likely to have a higher pH vs a container with no flow.

    You're doing a 25 gallon change in 125 gallons, the dilution factor in not significant, replacement water vs existing water.

    The corals and fish are doing fine so I would not change a thing unless you really want to.

    Jm2C
     
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  4. Mr. Bill

    Mr. Bill Native Floridian

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    +1

    Gas exchange does still occur without flow, just not as rapidly. However, without any life forms using O2 and producing CO2, gas exchange is a moot point.