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Thread: Cheap Sand-based CO2 Generating Sub

  1. #901
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    Jun 2016
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    Perth WA
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    Quote Originally Posted by Digbot View Post
    So on the Bunnings website there is a whole variety of white stones By reading the product description I managed to eliminate most of them as quartz or granite. Only one states in the description "stone" as its material: Tuscan Path 2kg 4 - 6mm White Mini Pebbles I/N: 3461770. Looks like the white version of the crappy starter tank pebbles or decor vase rocks. can someone verify is if is actually marble? My other option is to take vinegar with me to the store and science experiment while nobody is watching
    That sounds like the one.
    As Rebel said shell grit also works it just breaks down a bit faster. It will not break down in the life time of an aquarium but so is a good option.

  2. #902
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    Quote Originally Posted by Madmerv View Post
    That sounds like the one.
    As Rebel said shell grit also works it just breaks down a bit faster. It will not break down in the life time of an aquarium but so is a good option.
    Fair call, one could also use coral rubble from the LFS. Not sure about how easy is it to obtain tho.

  3. #903
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    Jul 2017
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    I did do the vinegar test at Bunnings, in the stack there was a few loose pebbles to test, poured vinegar over the rocks in my palm and heard the fizzing - confirmed!
    Now I can begin with my nano tank - AquaEL 290x290x350, with Fluval performance LED nano. Still have not decided on a filter yet, I don't have any plans on stocking as yet, mainly as a growing tank that I can use to quarantine new or sick fish, maybe shrimp If I can get a good ph with the substrate, my tap water is 8.4 and no amount of chemical buffering lasts more than a day before it is back up again. With driftwood its 8 - 8.2.
    Any thoughts? It is such a small tank and I don't want to disturb the substrate with a lot of flow.

  4. #904
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    ACT
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    Quote Originally Posted by Digbot View Post
    I did do the vinegar test at Bunnings, in the stack there was a few loose pebbles to test, poured vinegar over the rocks in my palm and heard the fizzing - confirmed!
    Now I can begin with my nano tank - AquaEL 290x290x350, with Fluval performance LED nano. Still have not decided on a filter yet, I don't have any plans on stocking as yet, mainly as a growing tank that I can use to quarantine new or sick fish, maybe shrimp If I can get a good ph with the substrate, my tap water is 8.4 and no amount of chemical buffering lasts more than a day before it is back up again. With driftwood its 8 - 8.2.
    Any thoughts? It is such a small tank and I don't want to disturb the substrate with a lot of flow.
    If your aims are to reduce pH (therefore kH) of tap water, suggest ADA/Black earth soil. There are other ways such as adding true peat to the 2TONED soil but I won't recommend it. For a nano tank, you will only need one bag of ADA etc.

    Other methods of reducing pH of tap water include using RO with acids such as HCL but that is also beyond the scope of this thread; suggest starting new thread. Actually there was a thread about it here somehwhere started by Indir.

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