Oase Biotec 10.1, Manual

Page: 23 / 49

25
Thermometer*
The thermometer allows the continuous monitoring of the wa-
ter temperature. Extensive bacteria activity is possible from
+10° C (green area). Do not add filter starter until temperatures
of over 10° C are reached.
When the water level is very low, insert the thermometer be-
tween the filter foam elements.
Temperatures well over 25° C indicate pond related imbalance
(pond too shallow - water becomes too warm). This can quickly
lead to abnormal pond conditions which can no longer be
compensated by the filter alone!
Maintenance, Cleaning/Overwintering
Maintenance, Cleaning
The Biotec filters are virtually maintenance free but will require
cleaning from time to time. The float on the Water Level Indi-
cator, indicates when cleaning is necessary.
To clean, take out the internal chamber(s) (by releasing the hooks
and lifting out by the handles) and rinse. The foam filter elements
can be pulled off and washed separately or exchanged. NOTE:
Only clean approximately 50% of the foam elements each time.
This ensures that not all of the vital Bacteria required for Biological
Filtration is washed away.
Attention: When cleaning the insert, protect the foam holders
against knocks! Risk of breakage!
To replace the foam elements lay the insert onto a flat surface.
The Biosurface elements in the base of the filter are only given a
quick rinse. Please do not use any chemical cleaning agents.
Overwintering
To protect the indicating devices during winter, these should be
removed and kept dry and frost free.
If the filter is to be switched off during the Winter the whole unit
should be drained and covered (this stops rainwater entering
the filter and subsequently freezing and damaging the structure).
Also, all hoses should be drained as far as possible.