crushed coral

Discussion in 'Beginner Discussions' started by Maxxis, 1 Nov 2011.

  1. Maxxis

    Maxxis

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    hey guys


    I went to a pet shop in order to see different types of substrate to buy for my tank and the guy suggested to get crushed coral. He showed to me crushed coral in bag which was about 3mm
    Is this good for a reef tank? Does crushed coral will affect the condition of the water?
    Also would like to know if there is any formula to calculate how many kgs will be needed

    Thanks
     
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  3. shaunn

    shaunn

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    i used 30 kg of crushed coral for my 300 L and seams to be running perfect but i would have preferred figi pink
     
  4. Maxxis

    Maxxis Thread Starter

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    what is the depth of yr substrate?
     
  5. shaunn

    shaunn

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    about 20 mm to 30 mm think the recommend is 50 mm all round but @ R200 a 10 kg bag it gets expensive
     
  6. Tremayn

    Tremayn

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    the 3mm particles should be fine but you will need some power heads down low or stronger flow to make sure that nothing settles and gets trapped
     
  7. RiaanP

    RiaanP Moderator

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    other options are aragonite. But its is expensive

    Or playsand. From Reggies or Garden Centre. Very cheap and very dirty, need to wash it out properly.
    I used playsand up to about 6 weeks ago. No problem. My DSB is playsand.

    The coarser the substrate, the more likely it is to trap detritus.
     
  8. rakabos

    rakabos

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    Playsand is a problem when your powerheads dont point up, you will snow storms non stop. I use the smaller crushed coral and love it
     
  9. Maxxis

    Maxxis Thread Starter

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    thanks guys

    will go for the 3mm crushed coral:)
     
  10. zak

    zak

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    Im using crushed coral as well, love it.. I think 3mm is a bit too course for my liking, you certain its 3mm? I got my crushed coral from exotic pets in Boksburg..
     
  11. Maxxis

    Maxxis Thread Starter

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    yeap this is what was mentioned on the bag
     
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