Live rock in refugium - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 01-05-2008, 11:00 AM Thread Starter
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Live rock in refugium

How much liverock rubble should I put in my refugium? Its about 25 gallons and in the fuge section I was planning on putting some rubble, 3" of live sand and cheto algae. Should I forget about the live sand and basically fill the bottom with LR? Or should I just put a few larger pieces of live rock and put the sand around them(Like in the display)? Any pictures would be appreciated.
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post #2 of 3 Old 01-05-2008, 05:32 PM
Most folks that use rubble use it in place of bioballs in a trickle filter. In reality it probably isn't any better but at least we like to think that micro-critters will live in there.

People that I've met that put rubble or live rock in the actual fuge do it for one of two reasons. First it's because they don't want a lot of rock in the tank so they keep it in the fuge, out of sight. The second reason would be to pile up some rubble or get a really porous piece of rock to put near a corner for pods to live and breed in.

The fuge is generally an area with sand (and at that if it's not more than 3" deep it's kind of pointless) and bits of algae. Sometimes people will fill them with fast growing soft corals as they will capture a lot of waste as food. A lot of rock in a fuge would allow particulate waste to accumulate into a sludge contributing to nitrates. IMO unless you just had to have more surface for bio exchange, I wouldn't add rock to a fuge. Some of the simplest fuges I've seen were bare bottom. They were stuffed full of algaes and mangroves. The fuge could easily be stripped bare in minutes and cleaned with a wet/dry shop vac in an instant. This removes any waste that accumulates over time and still works as a fuge should.
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post #3 of 3 Old 01-07-2008, 05:15 PM Thread Starter
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Thanks, Ill just put a small piece in the corner for the pods and that will be it. I was just going to put cheto aglae in it. Maybe a coupe of Nassarius snails to move the sand around. I had no idea Mangroves are a good addition too.
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