Ant Diffusers are simple yet quality-made air diffusers with several unique features which surpass many other makes and designs of diffusers. The overall cone shape design is based on a elaborate study of bubble flow patters that found that this design prevents bubble re-aggregation and thus a lower gas transfer rates. This Ant cone deign is non-clogging and has a higher air transfer efficiency. Ant diffusers incorporate a check valve/back-flow preventer for reliable, safe use. The chart below compares some common diffuser designs which do not equal the efficiency and low cost of the Ant Diffuser. Two models are available.