Rocks

Discussion in 'General Aquatic Talk' started by Warren, Sep 22, 2006.

  1. Warren
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    Warren Noob

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    Hi all,

    I'm thinking of introducing a few rocks into my tank. Now I don't know how true this is, but heard that there are certain rocks that leech chemicals into the tank that can effect the growth of your fish. Is this true or just rubbish.

    Regards

    Warren
     
  2. d3tained
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    d3tained Algae harvester

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    Hi Warren.

    It depends on where you get the rocks.

    If its close to the see then I would not use it as it can contain salt and other stuff.If it comes from mountains check that they do not contain hard metals like iron that will oxydise overtime.

    The best is to buy those at the petshop but still treat it.
     
  3. R.C.
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    R.C. Moderator Staff Member

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      :tool:
     
  4. Cameron
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    Cameron Green fingers

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    Some rocks will react to vinegar or other acidic chemicals. But generally you can use LFS rocks without problems. I 'collected' some nice rocks near the hartebeespoort area. Free rocks, yahooo :crytear:

    If you know the pet shop on Rifle Range road they sell some pretty cool rocks, but expensive.
     
  5. Anonymous
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    Anonymous Guest

    It's really amazing how natural things(driftwood, bogwood and rocks etc) are so expensive. It's not like they made it!!

    Here in Jozi I ussually see Magalies and Pelendaba rocks at shops. Both of these are aquarium safe and will not alter your water chemitry. I beleive they are Basalt rocks. Limestone type rocks will change your water chemistry though, rocks like bone rock. Quartz rocks are also aquarium safe and inert.

    But with any rock soak it for a while and boil it if possible.
     
  6. Warren
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    Warren Noob

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    So what would you suggest, stick to basalt and quartz rocks. As you say limestone will change my water chemistry which could become a problematical issue to my Discus, as they are very susceptible to water conditions.

    Thanks all for the input.

    Regards,

    Warren
     
  7. Anonymous
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    Pretty much yes. Limestone will be great for a Rift Lake setup but you don't want hard water in your discus tank. But some nice plants and a bit of wood will substitute any urge to buy rocks. :)
     
  8. Rattail
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    Rattail Algae harvester

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    not all rocks are bad. I managed to pick up a nice specimen in the Magaliesberge (when I had no choice but to live there)

    [​IMG]

    But you must know what you are doing, (or know someone who does, which fortunately I did! ;))

    I plan to use this in a Nature World style setup somewhere down the line.

    (BTW: Yes, I have had it in aquariums before. for a period spanning 10 years.)
     
  9. R.C.
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  10. natalieb
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    natalieb Noob

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    Does anyone know of a good site that has pictures of the good and bad rocks?

    Natalie
     
  11. Philip
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    Philip Algae harvester

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    Natalieb
    The easy way to establish whether the rocks are good or bad is to put a few drops of hydrochloric acid on them, and if they start fuzzing, stay away, as these rocks have a tendency to change your water parameters.
     
  12. Discus
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    Discus Algae harvester

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    Hydrochloric acid = pool acid, if you didn't know.

    Slate is also generally safe.
     
  13. henk hugo
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    henk hugo Noob

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    you can just use vinigar as well
     

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