water changes

Discussion in 'General Discussions and Advice' started by Express Reef, 31 Dec 2011.

  1. Express Reef

    Express Reef

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    just need some advice on water changes... my system is new, been running for 7 weeks now, got clean up crew in week 4. cuc is 2 hermit crabs, 2 turbo snails, 2 skunk shrimps and 2 sea urchins... got a sailfin tang and 3 small coral frags in week 6. The algae from the cycle is dieing of fast now and is getting less by the day, my cyno/red slyme bacteria is les by 70% since i run a airstone in the sump, and purigen...

    the water parm. is 100%.

    Tank volume 396 liters, sump 108 liters, total of 504 liters, want to do water change, what will be the best?

    one big water change or 2 small water change, and how many liters?

    regards,
    E.R
     
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  3. regis

    regis

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    I would say 15% to 25% of the tank volume depending on parameters
     
  4. belindamotion

    belindamotion Google Master

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    I do a 25% water change once a week on my little 58L Nano...having such a larger Tank I could see you doing water changes once every second week maybe..? Some.. I know.. do 25% once a month...I agree with regis..it depends on you'r water parameters...if you overfeed and say, have a week skimmer...then that will definately effect you'r water parameters...and you would have to do larger.. and also probably... more frequent water changes...but if all seems within reason, then 25% once every second week...?
     
    Last edited: 31 Dec 2011
  5. Express Reef

    Express Reef Thread Starter

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    my water params. is still 100%, going now for 8th week since the tank is started up... got only on fis... in for about a week now, just thought its time for a water change?
     
  6. Tobes

    Tobes Retired Moderator

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    I believe in 10% every week to replenish used up trace elements and to dilute nutrients. It is also less stressful to sensitive livestock than a big water change should the parameters like temp or salinity differ.
     
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  7. belindamotion

    belindamotion Google Master

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    Could be as you have basically nothing in you'r Tank...:p..but if you say you'r ALK,MAG,CAL,PH..etc are all within the "ideal" water range...then I'll say that you could leave it till next week...

    Ideal Water Parameters - Marine Aquariums of South Africa

    Can you post you'r Parameters that you tested...
     
    Last edited: 31 Dec 2011
  8. Express Reef

    Express Reef Thread Starter

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    @Tobes, so 50liters a week will be best then? think of doing every second week since i only got one fish, up till i got more life stock...
     
    Last edited by a moderator: 26 Nov 2015
  9. Express Reef

    Express Reef Thread Starter

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    @belindamotion, if i look at that table my specs is still 110%. ;-)
     
    Last edited by a moderator: 26 Nov 2015
  10. Express Reef

    Express Reef Thread Starter

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    @RiaanP, would like to have your input & advice. thanx
     
    Last edited by a moderator: 26 Nov 2015
  11. belindamotion

    belindamotion Google Master

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    Can you post you'r Parameters..
     
  12. Express Reef

    Express Reef Thread Starter

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    pH 8.5
    salinity 1.026
    calcium 410
    magnesium 1330
    nitrite 0
    nitrate 0.5
    phosphate 0
    amminia 0

    this is lab tested results, i know im lucky! ;-)
     
  13. belindamotion

    belindamotion Google Master

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    ..:thumbup:..everything looks perfect...did you do a dKh..? (Alkalinity..)
     
  14. Express Reef

    Express Reef Thread Starter

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    yes, 8 ;-)
     
  15. belindamotion

    belindamotion Google Master

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    :thumbup:..then I'll say try the 50L..test after a week..if it's still within range, then you know you can do it every second week...:thumbup:
     
  16. Tobes

    Tobes Retired Moderator

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    @Express Reef , yes you can do one for now. In the beginning it is not needed to do a 10% weekly if your tank is not stocked with corals and only got one fish. If the filtration is adequate and the parameters fine (with regular testing), then you can do less for now. I did 10% weekly on my LPS system which was fully stocked.

    Happy new year :peroni:
     
    Last edited by a moderator: 26 Nov 2015
  17. RiaanP

    RiaanP Moderator

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    10% weekly is normally OK to be able to replenish minerals as needed. Some member used to have in his signature the saying "Dilution is the Solution to the Pollution".

    And for softie and even LPS setups, doing 10% per week is more than enough and you do not need to add any trace elements. Unless you got loads of hermits for example that needs a bit more Iodine. Cheaper and safer than adding a lot of trace elements.

    Anyway, 50L on your system should be OK. And until you see a rise in one of the parameters, you can do it every second week.

    Also on 10%, doing it with water that is not the same temperature, will not matter. % degree difference will not even be noticed. But doing bigger water changes, then temperature, salinity and PH must be closer to the system.
     
    Last edited: 1 Jan 2012
  18. Tobes

    Tobes Retired Moderator

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    That was me :whistling:

    The saying comes from Anthony Calfo in his book I got :)
     
  19. RiaanP

    RiaanP Moderator

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    Tobes, you should put it back.
     
  20. Express Reef

    Express Reef Thread Starter

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    @Tobes & @RiaanP, thanx alot... just want to know, can i put my live rock in the water i take out and give it a clean/scrub? and put it back? if i want to add more sand to my dt will this be a problem?

    Happy new year!:peroni:
     
    Last edited by a moderator: 26 Nov 2015
  21. Tobes

    Tobes Retired Moderator

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    You can take the rock out and scrub it in salt water, no problem - just try not to damage inverts or coral pollyps if any.
    You can also add more substrate, just make sure it is clean and preferably flush it with the salt water you took out before adding it. The reason is say for instance you flushed/cleaned it with RO and add it straight away, it might affect the salinity if not drained properly. If possible and you have livestock in the tank, add Seachem Stability to help with the bacteria disruption :p
     
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