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Old 04-05-2005, 10:28 PM   #1
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Join Date: Feb 2005
Location: New Orleans
Posts: 211
how many bio balls = how many pounds of live rock rubble??

I would like to remove my bio balls. Right now I have a thin sand bed refugium with 2 "balls" of chateo and about 2 pounds of live rock rubble. Before the refugium, the water goes through bio balls. 4 questions are:

1. How many pounds of live rock rubble should I have total when all my bio balls are gone?

2. Does it matter where in the live rock rubble goes?

3. Do I need to light the live rock rubble?

4. How long should I leave the rubble in before I take out the bio balls?


-50gal tank
-20gal tall sump / refugium.
-About 15-20 lbs of live rock
-60 lbs (3") of sand.
-2x65w power compact lights
-2x18w power compact in the refug.
-bak pak 2R
-3 LARGE feather dusters all differebt colors
-orange spotted goby
-fire fish
-12 or so hermits
-50-60 nassairus snails
-about 12 turno snails
-emrald crab
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Old 04-06-2005, 12:47 AM   #2
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Join Date: Dec 2004
Location: Rocky Mount VA
Posts: 943
You would want the total amount of LR to be 1.5-2lbs/gal. As long as the LR stays submersed you can put it anywhere. I dont think that light is required for the beneficial bacteria, only the algaes would need it. Some one here can hopefully add or correct on this though. Most people change out 20% at a time to slowly allow bacteria to build on the new rock.
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28gal bowfront
40lbs livesand(bag from LFS), 30lbs live rock(LR.com)
2 O. Clowns
1 peppermint shrimp, 5 red leg hermit crabs,
4 mexican turbo snails, 15 nassarius snails
ricordea mushroom, candy cane coral,
super color polyps, hairy mushrooms
bubble coral, hawiian feather duster
coralife lunar 2x65, HOT magnum canister
10 Gal refugium(chaeto) & seaclone skimmer
RMPD109 is offline   Reply With Quote

balls, bio, bio balls, live, live rock, rock

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