A clean water surface in the aquarium and oxygen enrichment at the same time? Simply connect the JBL TopClean II instead of the suction pipe to the external filter and watch the water surface of the aquarium clear. The ratio of water surface to deep water intake can be adjusted.
You’ll find everything you need to know about the product and more pictures here: JBL TopClean II .
For more about filtering go to: Aquarium filters and aquarium accessories .