The advanced TetraTec APS 150 Air pump is for use with all aquaria from 80 to 150 litres in size. With the external flow control valve included, the TetraTec APS 150 can be easily adjusted to provide the right air flow for all purposes like box filters, airstones, action ornaments and undergravel filters.https://www.aquaristikshop.com/aquaristic/TetraTec-APS-150/118102/
- Howard R. wrote about TetraTec APS 150 in 2017:
I can't tell you the amount of air pumps I have bought all claiming to be silent and are not, however the Tetra is! The pump is a great design and is very efficient and SILENT, I have no problem recommending this to anyone the needs a great air pump.
Margaritis K. wrote about TetraTec APS 150 in 2016:
Very good and very quiet!