1. Warr7207

    Warr7207

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    What is better LR on substrate or elevated above the bottom ?

    What sort of elevation height if this is the choice ?
     
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  3. jacquesb

    jacquesb Retired Moderator

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    Hi Warr - Many people these days seems to prefer to build a structure on which they tie their live rock to. This is elevated off the substrate..... The original/old school of thinking was to have the rock on the glass, and the sand around the live / base rock, that the sand engulves about the bottom 1 to 2cm (perhaps more) of the rocks....

    The idea behind "elevated" rocks, is that detritus won't gather around the bottom of the rocks - between the rocks and the substrate....
     
  4. nakoma

    nakoma

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    what is the reason for liftin it off the glass then ?
     
  5. OP
    Warr7207

    Warr7207

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    So no real better way, If I elevate,how high ?
     
  6. OP
    Warr7207

    Warr7207

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    No answers :(
     
  7. shan

    shan

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    warr, remember you are elevating it so that detritus does not gather around/under it -so you need to elevate it enough so that you get good flow all around the rock and not too much that it looks stupid - a few cm should be fine
     
  8. Bob the (reef)builder

    Bob the (reef)builder

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    Good flow is all you need to flush out detritus and to allow flow around your rocks so as not to create to many dead spots. About 2- 4 cm should be fine.
     
  9. OP
    Warr7207

    Warr7207

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    Thanks for the info. Any ideas on how you can "hide" the elevation structure ?
     
  10. jacquesb

    jacquesb Retired Moderator

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    Hi Warr - you can try and tie zoanthids or star polyps against the structure, and have the polyps cover the piping - alternatively, you can basically just wait that the corralline algae covers the piping..... Or, perhaps pack some very small pieces of live rock (live rock rubble) just in front of the piping to hide it - but then you might be back to square one...
     
  11. OP
    Warr7207

    Warr7207

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    Thanks, nice suggestions:thumbup:
     
  12. Mike

    Mike Retired Moderator

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    Instead of using eggcrate, how about getting a piece of pipe about 20mm dia, then cutting it up into 15mm lengths and using them as pillars for your rock work, little bit of milliput (prattleys putty) on each, just to keep it still, and you will have much better flow under your rock, i find eggcrate eventually gets clogged with crap (i dunno, maybe i didn't use it properly??) but using small pillars gives less chance of detritus traps.
     
  13. OP
    Warr7207

    Warr7207

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    WOW, that is a great idea. Going go with that. This will also give great hiding spots for my hermits and shrimp. :thumbup::thumbup:
     
  14. gaz19

    gaz19

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    when your live rock is lifted of the sand it also creates more surface area, therefore more biological filtration.
     
  15. OP
    Warr7207

    Warr7207

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    Thanks,makes sense
     

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