OHF vs spongefilter which is better?

OHF vs spongefilter which is better?

Bibliographic Details
Published in:Animal Scene Vol. 16, no. 3 (May. 2016), 62-65
Main Author: Ampil, Angel L.
Format: Article
Language:English
Published: 2016
Subjects:
Aquariums > Equipment and supplies
Hobbyists