JBL CristalProfi i200 GreenLine

JBL CristalProfi i200 GreenLine is the largest internal filter in JBL's CristalProfi i range, for aquariums of 130 to 200 litres or around 80 to 120cm long. It comes with its media fitted and with a choice of return: a wide jet pipe for circulation or a spray bar to spread the flow across the back of the tank.

Key Features

• For 130 to 200 litre tanks: JBL's figure, for tanks of roughly 80 to 120cm.
• Wide jet pipe or spray bar: two returns in the box. A jet drives circulation, a spray bar spreads the flow and agitates the surface.
• Mechanical and biological in one: the foam strains the water and carries the filter bacteria.
• Comes with its media: ready to run.
• Dirty water cannot re-enter: JBL designs the outlet so what has been filtered does not get drawn straight back round.
• Large media volume for an internal: the biggest in the i range, and media volume is what carries a stocked tank.

Fitting An Internal Filter

• Mount it fully submerged, with the outlet at or just below the surface so it breaks the water a little. Surface movement is how oxygen actually gets in.
• Aim the outlet along the length of the tank rather than across it, so you get circulation instead of a dead end.
• Leave room to lift it out. A filter wedged behind rockwork is a filter that never gets serviced.
• Never run it out of water, even for a moment. These pumps are water-cooled.
• Rinse the foam in tank water at each service and squeeze it gently rather than wringing it out.

Good To Know

• A new filter has no bacteria in it. Stock slowly over the first weeks, feed lightly, and test ammonia and nitrite until both read zero. A filter becomes a filter over about a month.
• Rinse filter media in tank water, never under the tap. Chlorine kills the bacteria that do the biological work, and that is most of what a mature filter is worth.
• Service before the flow drops noticeably. By the time you can see a filter struggling it has already stopped doing part of its job.
• Switch the filter off at the mains before opening it or putting a hand in the tank, and fit the cable so water cannot run down it to the socket.
• An internal filter takes up space inside the tank and is visible. That is the trade for not needing a cabinet or hose runs.
• Suction cups perish and lose their grip over time. Check them at each service, because a filter that drops onto the substrate stirs up everything it has collected.