Piranhas Forum banner
1 - 2 of 2 Posts

·
Registered
Joined
·
491 Posts
if you have never seen an UGF, you will see that it has a set of raised plates with a "Grill" like pattern on the bottom that covers the entire bottom of the aquarium. it keeps the gravel out and allows about 1/2" free space under the gravel, hense the name UGF. the tubes have air line going all the way the bottom of the tubes. this creates bubbles in the small space of the tube forcing the water in the tube to rise up with the bubbles and exit the top. the water that is displaced in the tubes is replaced by the water from under the gravel.

the whole point is to have a good water flow with high 02 levels to reach your gravel where the bacteria can utilize the 02 and provide good bio-filtration. It can get clogged with waste if you don't vaccum it though. Hope this helps
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top