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Hose installation leaks and draws in air Check all connections are airtight and t correctly.
Airstone too close to suction pipe
If air is additionally provided by a membrane
pump, check that there is sucient distance
between the airstone and the suction pipe.
“IN” and “OUT hoses mixed up Reconnect hoses correctly
High ow resistance due to dirty lter material or
lter material in net bag
Clean lter material and do not ll long-term lter
material (JBL MicroMec, JBL SintoMec) in nely
meshed net bags. For special problem solutions,
only use the original CristalPro lter material
with the appropriate foam edge.
Stopcock on pump head stiff
Cause Solution
Washers do not glide
Dismantle hose connection block (7) and spray
the stopcocks with commercially available silicone
oil. Reassemble hose connection block and move
stopcock backwards and forwards a few times.
Fish dead and/or water cloudy
Cause Solution
Nitrite poisoning due to too rapid change from
old” to “new”. Cleansing bacteria thrown away
with old lter.
Run an old and new lter parallel for 2 weeks in
the same aquarium or incorporate 1/3 of the old
lter material in the new lter. Never carry out a
general clean up” of the aquarium at the same
time!
Filter material for problem cases (available at your specialist retailer)
12
Filter material with foam edge
The following filter material kits are constructed according to a new two-stage principle which
is specially designed for the CristalProfi Filter “e” range. They are comprised of a core section
and an edge section. The core is made up of a relatively fine special filter media requiring a
finely meshed net bag. The edge consists of coarse foam. With this design, the water flows
slowly through the special filter media providing optimum efficiency, whilst at the same time
the overall water flow through the filter is obstructed as little as possible thanks to the coarse
foam edge. The size and volume of each kit is measured specifically for the filter basket of the
JBL CristalProfi e range.
JBL CarboMec Pad
Kit with high-capacity active carbon
Removes residue medication, water discolouration and high molecular pollution from fresh
water and salt water. Virtually no increase in conductivity and phosphate levels in the water.
32


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