Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Live rock in a FW aquarium? (

Jaysn 01-13-2007 12:43 PM

Live rock in a FW aquarium?
I have a friend who is setting up a new saltwater tank, and we've recently been discussing the benefits of live rock, and even made some. It's the most porous rock I've ever seen, looks solid but you can put a hose up to it most of the way on and water just flows right though it. Would it be possible to set up some sort of freshwater analog? I think the hardest part would be coming up with a sample of whatever micro and macro life lives in the environment you are trying to recreate in your tank to seed the rock with. What does everyone think?

joeshmoe 01-13-2007 12:47 PM

sounds impossible to me. :dunno: i know if u dry it out it would be fine but live idk about that.

Gump 01-13-2007 12:49 PM

There not really the same thing. You can use porus rock and put a good water flow over it and you will build up good bacteria but not to the same extent that saltwater live rock has. It also takes quite a long time to turn "dead" rock into live. Lava rock is used as a bio filter but its one of the worst per sq inch you can use. now there are man made things with much better bio holding capacity.

caferacermike 01-13-2007 01:11 PM

You'd only end up with the bacteria part of "live rock" What you'd be missing out on was the PH buffering, carbonate hardness, micro fauna, there is a lot more to live rock than just bacteria.

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