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Thread: Cure DIY rocks

  1. #1
    Senior Member clown_fish's Avatar
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    Cure DIY rocks

    Have any one DIYed rocks and how long did it take to cure them in fresh water ?

    I've made some rocks with 1 part cement, 1 part sand, 3 parts oyster shell, 1 part water and have been cure the rocks in fresh tap water with a power head for almost 4 months. Last night i checked the ph and it was still of the scale ( deep purple colour ).

    I heard that it only takes 6 -8 weeks of curing time in fresh tap water. So what did i do wrong ?

    tx.

  2. #2
    Senior Member clown_fish's Avatar
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    Also i change the water weekly.
    90G bb mixed reef set up in April 2005. I had 40g mixed reef for one year before that

  3. #3
    Moderator Krugar's Avatar
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    I tend to put "nasty stuff" in a bin and then let the discharge from my RO/DI flow into it so there's frequent water changes.

    But my RO unit is hooked up to the fridge so it runs a little every day to top off the 3G tank.

    Cheers!
    There is nothing so permanent as a temporary measure.

  4. #4
    Senior Member clown_fish's Avatar
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    Originally posted by Krugar
    I tend to put "nasty stuff" in a bin and then let the discharge from my RO/DI flow into it so there's frequent water changes.

    But my RO unit is hooked up to the fridge so it runs a little every day to top off the 3G tank.

    Cheers!


    ???????

  5. #5
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    Cool

    takes around 6 to 8 weeks. checl with fresh water ph kit.
    then use some of your water change water and soak another week checking with a salt ph kit.

  6. #6
    Senior Member clown_fish's Avatar
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    Hi Johnny,

    I've been cured the rocks in fresh tap water for almost 4months with weekly water change. I checked the ph last night with fresh water ph kit, and it was still off the scale.
    I just don't know why ph didn't drop.
    90G bb mixed reef set up in April 2005. I had 40g mixed reef for one year before that

  7. #7
    Moderator Krugar's Avatar
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    Maybe I should finish my coffee before posting.

    My RO/DI until isn't saddle valved into the drain, the rejected water line drops into my laundry tub.

    So I put curing DIY rock, or anything that needs a way good rinsing into a Walmart type bin, and let it soak in the rejected water.

    As new RO/DI water gets made, it overflows the bin. Free daily (okay effortless) water changes since I also use RO/DI for ice cubes & drinking water as well as using it for my aquraium.

    Anyway it takes about 4 weeks to kill the pH that way for me.

    Did that make more sense? And yeah soak them in SW for at least a week afterwards.

    Cheers!
    There is nothing so permanent as a temporary measure.

  8. #8
    Senior Member Marty's Avatar
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    I have a 45 gallon drum full of DIY rock that has been curing for 10 weeks now...I change the water twice a week and the Ph is still at 11.2. I also figured that it would take about 8 weeks but I guess it depends on how big the rocks are and the volume of water that they are curing in. If you change the water twice a week it will speed things up a bit but make sure that you wait until the Ph drops closer to 8 before putting them in your tank.

  9. #9
    Senior Member clown_fish's Avatar
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    Ok thanks guy. I guess i will have to do more than one water change per week.
    90G bb mixed reef set up in April 2005. I had 40g mixed reef for one year before that

  10. #10
    Senior Member tictoc's Avatar
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    when I make some there is a nice river close to my house....i'm gonna toss em in there for a couple months then check em out hehe =)
    Any darn fool can make something complex; it takes a genius to make something simple

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