Fish only water parameters

Discussion in 'General Discussions and Advice' started by pixel, 18 Sep 2013.

  1. pixel

    pixel

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    Hi

    Ive been toying with the idea of doing a fish only tank, one or two big angels, some flies, and tangs and so on.

    My question is this, would a lower salinity be a good idea, say 1.018 or so? Obviously things like crabs and shrimps wont be able to survive in such conditions, right?

    The lower salinity is obviously aimed at healthier fish, less parasites etc.

    Thoughts?
     
    Last edited: 18 Sep 2013
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  3. KeeganP

    KeeganP

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    I aim for between .23 -.27 this is a good range,
    Also depends on the fish as well.
     
  4. Fanlie

    Fanlie

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    only fish can 1.017-1.019, if you need less parasites then 1.009-1.012, need carefully

    Het net eenmaal probeer 1.012, sg afgaan is ok vir visse maar sg raise moet baie versigtig baie baie stadig raise sg.
     
  5. KeeganP

    KeeganP

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    remember although you think the fish will be healthier with less parasites etc.

    Fish also need to be in the optimum salinity as well, which is always recommended around 1.020 to 1.026

    Fish need to be hydrated too, the higher the salinity they wouldn't be able to stay hydrated and vice versa...
     
  6. pkc

    pkc

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    The salinity you are looking at wont help with parasites at all!
    Sure, for a short time the fish will have slightly less stress as their ion pump as far less of a load, this is just one of the two organs that take care of the immense saltwater that they drink to off set life threatening osmosis, but its not advised to keep them that way for the long term due to affects on bacteria with in their bodies and they will also become water logged and subsequently anaemic and die!
    Quick or slow, if they are not brackish species, they will die!
    Salinity should be close to correct for the nitrogen cycling bacteria and the fishes ease at ionic balance, so I wouldn’t leave it below 1.021 up to 1.024.
    We kept fish in low salinity for commercial reasons to save money for short bursts at 1.007 to 1.014, but many of those fish died from it after they were bought from the lfs.
    Reasonable salinity is also needed for protists, white spot and velvet are parasitic protists, but the other millions in your aquarium represent a huge chunk of most of the creatures in the ocean and are essential for life to exist in a marine aquarium.
     
    Last edited: 19 Sep 2013
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