Undergravel Filtration - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 15 Old 10-08-2009, 07:06 PM
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I changed my ugf to reverse flow. Just the other day, I decided to remove it completely. I could not believe all the nasty stuff trapped under the ugf, looked like some type of brown algae. So glad to have that ugf out of there!
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post #12 of 15 Old 10-08-2009, 07:17 PM
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Twister: Did you leave the fish and water in when you removed it or did you tear the tank down? Just wondering because I have to do the same thing with my 55gal.
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post #13 of 15 Old 10-08-2009, 07:34 PM
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Originally Posted by WisFish View Post
Twister: Did you leave the fish and water in when you removed it or did you tear the tank down? Just wondering because I have to do the same thing with my 55gal.
I made the dumb mistake of using medication, that resulted in the death of a few of my fish. I decided to do a complete tear down to remove the meds. I removed all the gravel and rinsed it in water from another tank, to save the cycle, same with the filter. The water was completely drained, so I had to buy a very large rubber maid container to put the fish in for a few hours during the tear down.
Since, you are not stripping the tank from meds, you may get away with leaving the fish in. Hope you do not have all the nasty build up under yours, like I did.
Good luck with it! Gravel cleaning is already so much easier now that my ugf is gone!
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post #14 of 15 Old 10-09-2009, 06:10 AM
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Perhaps one of the most effective forms of filtration can be accomplished with the use of under gravel filtration combined with Reverse flow powerhead or canister filter. Reverse the flow of powerhead ,or attach return tube from canister to the lift tube of the undergravel filter. In this way water is forced down under the gravel and dirt is pushed up through the gravel where the canister can remove it or by the use of hang on the back filter which will remove it .
Have seen this filtration used in large tanks containing cichlids which are noted for being rather efficient waste producers.

The most important medication in your fish medicine cabinet is.. Clean water.
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post #15 of 15 Old 10-09-2009, 06:22 AM
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One of my local fish stores uses nothing but UGF in their store, and their water is as clean as any I've ever seen. I asked an employee what maintenance schedule they had, and she told me they only feed the fish every other day ("a hungry fish is a happy fish" she said), and vacuum gravel/change water every month or so.
I suppose if you feed the fish less, they produce much less waste, and the filter can function better. I'm surprised at the long interval between water changes.
In my experience, UGF's require much more frequent and intensive maintenance than she described, and I've don't use them anymore.
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