Review on 🌀 Hikari Bacto-Surge High Density Foam Filter: Enhance Filtration Performance with Large Size by Kelly Johnston

They take the sponge filter to the next level by offering the same effective solution as sponge filters, and it comes with a built in air duct that extends to the bottom of the filter, so you don't need the typical extension air line do not install down into the filter and there is no need to cover them with an air stone as once again they are in charge of everything with an air diffusion chamber at the bottom of the filter. Management.