This air pump from General Hydroponics, has 4 outputs that can be split to up to 16 outputs. Heavy duty design with stainless steel construction on internal parts. Features replaceable diaphragms and rubber feet to minimize vibration. This unit can drive up to 16 waterfarms or airstones. Comes with a one year warranty.
Posted by Animal on 13th Jan 2012
I have been using this 24/7 for about 4 months. It is a nice quiet unit. I like that the valves can be operated individually. The unit builds up almost no heat.
I did not give it five stars because the L shaped rubber pieces with eventually get brittle and fail. The description say 16 stones...??...
That is a pretty ambitios estimate. I power four 5 gallon pots and the water is at a constant "boil". I would not go 16 pots. More like 8 comfortably.