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Old 11-17-2005, 11:35 AM   #1
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Undergravel Filter with Crushed Coral & Live Sand Substr

I'm curious to know everyones thoughts on my idea. I have an Undergravel filter with Crushed Coral Subtrate. I was curious has anyone every attempted adding an additional layer of Live Sand on top of the Crushed Coral? Any advantages or disadvantages that anyone can think of?
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Old 11-17-2005, 11:45 AM   #2
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The sand will fall in between the crushed coral.
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Old 11-17-2005, 11:47 AM   #3
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Quote:
Originally Posted by demodiki
The sand will fall in between the crushed coral.

The sand will eventually work its way under the CC
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37 gal all glass
50lb LR
3' fine sand bed 1x Orange Stripe Prawn shrimp goby, 1x sixline wrassemated pair of true percula clowns, 1x CBS shrimp, 2x peppermint shrimp, 1x pistol shrimp, 1x tiger tale cuke, ~20+ snails, ~10+ hermits, 1xserpent star.
green Bubble coral, hammer coral (8 heads!) ,various Zoos,green finger leather, green star polpys ,shrooms
175w 10k MH
28w actinic 03
2x maxi jett 1200
Prizm skimmer (modded)
Hagen powerfilter(for running carbon 24/7)
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Old 11-17-2005, 11:47 AM   #4
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Oh and you need to ditch the UGF
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37 gal all glass
50lb LR
3' fine sand bed 1x Orange Stripe Prawn shrimp goby, 1x sixline wrassemated pair of true percula clowns, 1x CBS shrimp, 2x peppermint shrimp, 1x pistol shrimp, 1x tiger tale cuke, ~20+ snails, ~10+ hermits, 1xserpent star.
green Bubble coral, hammer coral (8 heads!) ,various Zoos,green finger leather, green star polpys ,shrooms
175w 10k MH
28w actinic 03
2x maxi jett 1200
Prizm skimmer (modded)
Hagen powerfilter(for running carbon 24/7)
nano arctica chiller
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Old 11-17-2005, 08:16 PM   #5
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You know what I think about this....
But hey, its your tank and if you like it run it.
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7/03-55 FOWLR 60lb LR, 50 lb SD sand 2x40 NO strip light, Reef Devil/sump, Fuge

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Old 11-19-2005, 12:09 PM   #6
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UGF's are really an antiquated method of filtration for SW tanks. They work ok, for a while, until they get plugged up and you have to tear down the tank to clean them...and that's counter-productive to creating a stable, low maintanence tank that doesn't have radical changes made to it.

And yes, the sand will quickly find its way underneath the CC, and that'll cause problems with the UGF working properly. Plus, CC accumulates detris quickly, making it a bit of a nitrate factory unless you very diligently gravel vac the tank weekly.
Also, CC is sharp and totally unsuitable to many species of sand dwelling/sifting creatures.
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Old 11-19-2005, 01:39 PM   #7
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ditch the UGF, they are used for bio-logical filtration but we have a better way,live rock.
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