Thread: lava rock
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  #6  
Old 04/19/2005, 07:09 PM
Nuhtty Nuhtty is offline
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Join Date: Oct 2004
Location: Philadelphia
Posts: 6,960
I would avoid Tufa rock. Too much phos in it and some has iron in it.

When I put it in my tank it was a hair algae magnet.

Bad idea, IMO