Help with artificial rock

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hi guys, i have been runninig a 2m tank for about 3months now, got cured water so i could start then and there. sitting with a problem-LR for a 2m at R120p/kg could get VERY exp, when speaking about artificial rock wot type is allowed and where to purchase? please assist thanks
 
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Buy it from LFS, called bio-rock, works pretty well to make up volume of the reef
 
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hi warr is bio rock the same as base rock
Depends what it's made of. You want a porous rock, to allow bacteria to grow deep inside the rock.

Granite won't do it. Sandstone will be good. Coral skeletons even better.
 
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Why not making your own using crushed coral and portland cement? You add some coarse salt before moulding it to make it more porous. You could make a lot quite cheap!
 

jacquesb

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Gershwin - to DIY your own rock:
- white cement
- aragonite
- rough sea salt
Mix these in equal quantities, and mix with very little water, that you have a dry'ish cement mix.... it must be much more like clay...
 
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so ur method is it by putting something inside the rock or just the way you let it set?
 
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maybe so it doesent affect water parameters
I would understand washing and rinsing but curing is normally associated with cycling your rock's dead organisms and basically making sure you don't have an algae bloom or ammonia spike
 

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