© by WilTec Wildanger Technik GmbH
Item 50167
Page 4
09 2021
-1
Technical data
Dimensions
(
㎜
)
690 × 515 × 395
Maximum water flow
(
ℓ
⁄
h
)
10,000
Hose inlet
(
㎜
)
20 / 25 / 32 / 40 (¾
″–1½″)
Outlet/outflow
(
㎜
)
40 / 51 / 72 (1 ½
″–3″)
Number filter mats
2
Number coarse sponges
4
Number fine sponges
4
Suitable for fish ponds up to
(ℓ)
30,000
Suitable for ornamental ponds up to
(ℓ)
15,000
According to the type of use, the optimal circulation cycle is dependent on various factors: fish popula-
tion, water plants, solar radiation and the desired water clarity. Of course, the other components of the
filter circuit must be harmonised with one another if necessary.
Basically, there are two distinctions:
1. Optimal pond circulation
This refers to how often the whole pond content is directed through the filter within a specific time unit
(circulation per hour).
The following values may serve as guide values:
•
Koi pond/ fish pond:
◦
1 × in 3 hours up to
◦
2 circulation /circuits in 1 hour (without plants and with high fish stock)
•
Garden pond/plants pond:
If the pond has no fish stock, circulation is not necessary at all. In this case, water and marsh
plants are a sufficient replacement/substitute for a filter system.
•
Natural swimming pond:
◦
Here the circulation cycle depends strongly on the plants and your own requirements.
◦
The upper limit is 1 × in 2
–3 hours, the lower limit is no circulation at all.
2. Length of stay of the water in the filter (length of stay)/filter volume
Here the real volume of the filter applied by pressure-less systems is interesting:
50167 (CBF-500) = approx. 120
ℓ
After a period of time of approx. 2
–3 weeks, nitrifying bacteria settle in the filter sponges. These need
time in order to affect (have an impact on) the water.
The intended time that the pond pump needs to fully fill the filter lies between 1,5 min and 3 min with the
above-mentioned filter volume.
A well “run-in” filter needs therefore
NO
circulation cycle of 2
–3 × per hour. It is definitely sufficient,
depending on the pond size, to have cycles of 1
–2 × every 10 hours.
