![\"Hemichromis](\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Hemichromis-bimaculatus-Red-Jewel-Cichlid.jpg\")
Wet-dry filters are a hybridized version of the trickle sump filter where some submerged static biomedia is added. This gives better biofiltration than a trickle filter but is still only about 70% as efficient as a static media submerged bioballs filter. A 100% bioballs wet dry sump will have only about 10% of the efficiency of a fluidized bed K1 sump. And wet dry sumps can be exceedingly difficult to get a good \u201ctrickle\u201d, with no channeling or overflow.<\/p>\n\n\n\n
The best thing to do with any wet dry filter is to simply convert it to a completely submerged filter. Change the media out to pot scrubbers, 20 ppi foam or submerged K1 media. And you will have a MUCH<\/strong> better filter. For the optimum convert it to a K1 fluidized bed.<\/p>\n\n\n\n