Mr Pleco;4470220; said:Too hard to clean and maintain.. basically contributes to high nitrate levels..
No one uses UG filters anymore there are better options out there now....even a sponge filter is a better choice....
SPONGES AND LOTS OF WATER CHANGES ARE WHAT MOST BREEDERS USE.... AND THE BREEDERS I USE TURN OUT SOME REALLY NICE DISCUS!!