Double Aeration releases air through a “fish stone” emitter deep in the aeration tank to enhance performance in hydrogen sulfide reduction. This optional upgrade can be added to any Aer-Max system.

Note: Since iron oxidizes very quickly when exposed to air, it can quickly stop up emitters in the double aeration system. Double aeration, therefore, should not be used if there is even a small amount of iron in the water or if the water is very hard.