citat din manual:
Bubble formation at the output of the
skimmer
During operation of the skimmer in the start-up phase and during the feeding of the animals it is possible that fine air bubbles are discharged at the outlet (4). These air bubbles are created when the aquarium biotope is oversaturated with oxygen, and also after the addition of nutrients and organic supplies, amino acid, etc. Even if a filter wool is used which is not prewashed the water can be very foamy, and the Comline® DOC skimmer can possibly overflow and definitely produce many small air bubbles.
This bubble formation usually isn’t harmful to animals.
However, we recommend to always use the full air power, and to position the unit slightly higher within the aquarium in case of an excessive foam development.
If the fine air bubbles are bothersome, the foam insert 3162.200 can be installed at the bottom of the skimmer (5).
The bubble formation will usually disappear by itself after the start-up phase or within a few days.
deci
1. aer la maxim
2. pus cat mai sus posibil
3. burete pus sub el, in locasul ala special de sub pompa
4. probabil o sa treaca, cu rabdare
si mie mi s-a parut destul de fitos acest skimmer, mi-a luat niste luni de bibileala ca sa ma inteleg cu el