Water changes : what to do

Discussion in 'Beginner Discussions' started by VicZA, 17 Dec 2013.

  1. VicZA

    VicZA

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    Hi All,

    I would like to find out how everyone does their water changes, not related to frequency or volume but rather how you setup the "new water". I have read a little about this and wanted to confirm the following:

    1 - Add salt to the RO/DI water that you intend using so that the salinity matches that of the tanks (mine is 1.025) - correct ?
    2 - Make sure the water is at the same temperature as the DT (mine is 27) - correct ?
    3 - Must this water stand for a while in order to "mature" ?
    4 - remove equal amount of system water from sump or DT
    5 - Add the new water - must this be dripped in or just poured in ?
     
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  3. JacoD01

    JacoD01

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    Hallo,

    1 - Salinity may differ from the DT, in cases where you want to raise or lower the salinity in your DT, but your PH and temp must as far possible be the same!
    3 - This is debatable. When I used Seachem salt, I made the water and let it cycle from 24hours before adding it. I am using RedSea Coral Pro salt currently and it does not require a standing period. So as soon as all the salt is dissolved, it add it.
    5 - Just pour it in. Once again you have to make sure the PH and Temp is the same when adding it.

    Hope this helps.
     
  4. mariusmeyer

    mariusmeyer

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    I only heat my salt mix in winter or when I do a big water change of about 30 - 50%. I do put in an airstone to get oxygen levels up though. I have never checked Ph regardless of water change size and have not experienced any issues.
     
    Last edited: 17 Dec 2013
  5. Fanlie

    Fanlie

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    I use
    1-RO water raise temp 23-24'C
    2-Throw salt in and powerhead ON with air -+2hours
    3-Water change
     
  6. Bendor

    Bendor

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    RO/DI confirmed with TDS every 2 months
    Big bucket, water, salt, mix for 2 hrs, confirm salinity (increase/decrease as neede acc to DT)
    Syphon out of DT, pour in to DT.
    Ambient water temp not really an issue in PMB.

    I do this about as often as I check my TDS.
     
  7. viper357

    viper357 Admin MASA Contributor

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    Some do, some don't, personally I like to stick a pump in the bucket and let it circulate overnight. But there have been a few times where I have made up a salt mix and used it within an hour of making it, nothing bad ever happened.
     
  8. BarryG

    BarryG

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    1. Phone a friend
    2. Mix some salt
    3. Drink some beer
    4. Have friend do water change
    5. Problem solved
     
  9. VicZA

    VicZA Thread Starter

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    Hahahahahaha .... indeed ... a good plan. Will come around to your place tomorrow with the frags - then you can teach me this stuff :peroni:
     
  10. Neil86

    Neil86

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    Hi guys quick question on this subject. How do you guys get the temp the same as the temp in the tank? do you have an extra heater just for this purpose? What options are there?
     
  11. viper357

    viper357 Admin MASA Contributor

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    For big quantities then yes, stick an extra heater in there, but I find when I'm making small batches in a 25l bucket, just having the pump in there with the lid 3/4 covering the top creates enough heat to heat up the water nicely over a day or two.
     
  12. Neil86

    Neil86

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    Thanks Viper can probably just by a cheapie pump for this purpose?
     
  13. butcherman

    butcherman Moderator MASA Contributor

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    yup I use and only return pump that has lost its vooma
     
  14. BlackSpark

    BlackSpark

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    Cheapie pumps work well but if you are going to use the same cheapie pump to feed the water into your display tank then you might want to select a stronger pump.
     
  15. Hussar

    Hussar

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    Is there any point to checking nitrates ammonia etc or. Is that paranoid?
     
  16. irie ivan

    irie ivan MASA Contributor

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    Checking nitrate and ammonia a bit paranoid... Yes!
    However, checking alk, mg and ca pretty relevant if you are keeping an eye on there params in tank. Some salt mixes can be damn insufficient...
    Recent params off a batch:
    Alk 6.3 dkh
    Mg 1050
    Ca 350
    K 340
    S 35ppt
    Unacceptable really when marketed as a reef salt?
    Anyway, well leave the tantrums for the queens..

    I would advise aerating RO, drive off as much CO2 and reach o2 equilibrium. Heating the RO before adding salt as opposed to heating salt mix. Especially relevant in smaller containers... Sollubility of calcium at temperature come to mind anyone?
    Ever held a heater in your hand whilst on? What u think gonna happen to the calcium in solution when it passes heater?
    A reality in tank too yes.... BUT.....
    Also aerate mix for a few hours if you have a pH monitor, you'll be amazed at how it varies and eventually settles to around the 8.something mark. Even more obvious if RO was not oxygenated prior to addition of salt.
     
    Last edited: 23 Feb 2014
  17. Stanley

    Stanley

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    Nice to know these facts and inputs, I used to mix the water, let it stand for about 24hrs with a small pump just to keep the water circulating and desolve what ever salt is remaining, and pumped it into my tank the following day. never checked temp or ph.
     
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