Adjustment of the water lever in the body of the skimmer and, therefore, of the type of skim (dry foam or more humid foam), is easily achieved by extending or retracting the telescopic water outlet pipe.
The sponge located at the outlet has the double function of neutralising the few air bubbles that may have come from the reaction chamber and reducing the noise made by the falling water.
Very easy to install, as are all BLAU Aquaristic skimmers, just plug it in and it's ready to go!
For Aquariums upto 1200 liters