Quiet Rotary Mod-ern Aeration Sys-tems (MAS) con-trol odor, sustain fish population, and maintain ade-quate oxygen levels for nutritional cycling in ponds and lakes of 2 acres or less. Operate at depths up to 20 ft. Require no electrical components in water or on surface. Various models available. Ideal for golf course ponds.

Aquaculture Research/Environmental Associates, Inc., Pond/Lake Div., Homestead, FL