OHF vs spongefilter which is better?

OHF vs spongefilter which is better?

Manylion Llyfryddiaeth
Cyhoeddwyd yn:Animal Scene Vol. 16, no. 3 (May. 2016), 62-65
Prif Awdur: Ampil, Angel L.
Fformat: Erthygl
Iaith:English
Cyhoeddwyd: 2016
Pynciau:
Aquariums > Equipment and supplies
Hobbyists