Any ideas for rock?

Discussion in 'Fish Only Tanks, Predator Tanks' started by flappy, 18 Jan 2008.

  1. flappy

    flappy

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    OK So I have had a mixture of limestone and live rock in my tank for a while now.
    I have had the limestone leaching into P04 into the water and as a result have decided to strip the tank and replace the limestone with something else.
    As it is a large tank and a fish only do you guys have any suggestions for a cost effective solution for rock?
    I looked at liverock but am going to need about 300 kg which is VERY costly.
    My tank is 3.2m long by 1.2m wide by 1.1m high.
    Any ideas?
     
    Last edited by a moderator: 18 Jan 2008
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  3. Mike

    Mike Retired Moderator

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    you can buy baserock, considered rubbish in reefy circles but it would be fine for FO tanks
     
  4. flappy

    flappy Thread Starter

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    Where can I get this,what does it go for and where does it come from?
     
  5. Mike

    Mike Retired Moderator

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    Not sure where you would buy it (i'm in England):) check the sponsors but it is much cheaper than live rock
     
  6. Obi-Wan

    Obi-Wan

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    Ceramic-based and Aragocrete rocks

    If you had issues with limestone,( natural seawater(?)) and no doubt it affected your Liverock, substrate, and water ( and vice versa).

    Consider the 2 options above.

    Aragocrete will cost between R25-30/kg TO MAKE YOUR OWN.
    Sizes, shapes YOU want.
    Assists mineral Balance, colonizes rapidly.
    Porosity can be "designed"
    Downside, will take min 3-4 weeks pre-curing to reduce it's alkaline nature to tank pH, Alk level.

    Ceramic rock, around R40-65 depending on type and supply.
    There ARE different products/sources.
    Not ALL are created equally.
    A variety of porosity,density, shapes.
    Downside, some break in transit, BUT can be easily puttied together.

    OVERALL benefit. You WON'T NEED 300kg of EITHER.

    Closer 200kg Ceramic, and near 300kg Aragocrete.
    Maximum 40kg of BEST quality LiveRock will animate either/both.
    You can reduce rock use, to allow for ACTUAL Liverock chosen to seed.
     
  7. sandersc

    sandersc

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    Liaquat, what about sandstone rocks, can they be used or not?

    Sanders
     
  8. Obi-Wan

    Obi-Wan

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    Sedimentary, my dear Watson!

    You saves your money, you takes your chances, right!?

    Think of

    Origin.
    Source location.
    Compostion.
    Inclusions, organic or other.
    Leaching rate.
    Disintegration rate, if any.

    I could, but don't want to go on..

    Knowing me, would I use any?

    You may have different compelling reasons though.....

     
    Last edited: 18 Jan 2008
  9. koi500

    koi500

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    hi flappy, i used ordinary sandstone rocks collected from reunion beach durban - this was about 15 years ago and there was plenty lying around then - still in my fish only tank today - i simply drilled holes into then and fitted 12mm wood dowels to make them stable when building one on top of another - made a pyramid shape along the face of the tank so the fish could circle the "reef" and swim through the holes i created during the building - have easily about 100kg in the tank -photos as soon as i can get them organised - obviously the sandstone is porous so wouldnt use copper in the tank - cheers dave
     
  10. sandersc

    sandersc

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    Dave, would be nice to see the pics. Anything growing on them?

    Sanders
     
  11. koi500

    koi500

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    hi sandersc, not that i can see/noticed - after reading these forums ive come to the conclusion that fish and fish only will survive in my setup - only green algae in tank which i siphon out at every water change - gotta do some water testing - though the fish look healthy i guess the sunshine is responsible for the heavy algae growth? cheers dave
     
  12. jacquesb

    jacquesb Retired Moderator

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    Hi Dave/Koi500 -

    No - nutrients in the water also helps with the algae growth.... Corals require reasonable low nutrient levels (except for soft-corals - they can survive nicely with slightly higher nutrient levels)....
    With nutrients, I mean: nitrates and phosphates - they act as "algae feed"....

    The sun is just the catalyst require to make the algae grow EXTRA fast.... (as does my metal halide lighting)....
     
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