Flooming, Sponge Filters, BioFilm and Osmosis Defined.

*Air Stones* – Retailers sell electronic pumps which force air through tubing into a porous stone. The air emerges as a column of tiny bubbles in the water. This carries water upward for gas exchange at the surface. *Osmosis *- Molecules of gas and liquid will always attempt to disperse evenly throughout an environment. An … Read more