mixing substrates

Discussion in 'General Discussions and Advice' started by Robert., 20 Apr 2011.

  1. Robert.

    Robert.

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    hi guys:)

    Today i have set up my refugeium:thumbup: but i just want to know, Sand dollars? are they safe to have in a DSB?, i just want ur opinions. Also i bought some agronite sand.. that costs a :eek: load:( and i see that the DSB is only 2-(2.5/3) inches deep, I want to increase it to about 5 but i dont want to pay that much again;) so? is it ok if i mix substrate? will it have a inpact on the quality? of the agronite??. If not what can i use that is cheap and easy to get? i was thinking pool sand or play sand but i hear stuf about sillica or something.:(
     
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  3. Tobes

    Tobes Retired Moderator

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    You can use playsand, just wash it very well until white. You can mix different types of sand, but not too course as it might trap detritus and have a negative impact on the anaerobic area in the DSB, in other words the low oxygen zone. You don't want oxygen rich water to penetrate too deep. That's why a DSB must be from fine sand and about 12-15cm deep.
     
  4. Robert.

    Robert. Thread Starter

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    Awsome:) so it wont effect the performance or the agronit?:)

    Is there any particular brand of playsand that i must look for??
     
  5. maxisoft

    maxisoft

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    Any playsand is cool... I got mine from reggies... imo aragonite in the dsb is a huge waste of bucks... rather put it in the DT.. ;)

    Playsand although the plastic bag says its washed, means nothing. Wash a little at a time in tap water over and over until its completely clear and white..... then place in the dsb....;)
     
  6. Robert.

    Robert. Thread Starter

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    Thanks :) i also have black agronite in the Display with literaly a handfull of crushed coral for that speceld effect...- makes it look exotic;)
     
  7. Firefly

    Firefly

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    Just a question. I found a very fine Pfs almost the size of medium beach sand. Would this be OK for a FO system?
     
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