JBL CristalProfi i100 GreenLine

JBL CristalProfi i100 GreenLine is the second-largest internal filter in JBL's CristalProfi i range, sitting between the i80 and the i200. It does the mechanical and the biological work in one modular unit, comes with its media already fitted, and has a rotatable outlet so you can aim the flow where the tank needs it.

Key Features

• Between the i80 and the i200: JBL steps this range by tank size, so the model number is the guide to capacity.
• Mechanical and biological in one: foam that strains the solids out and houses the bacteria that process ammonia and nitrite.
• Comes with its media: ready to run as soon as it is fitted.
• Rotatable outlet pipe: aim the return along the tank rather than across it.
• Modular design: cartridges come out individually, so you can swap one stage and leave the rest.
• Energy-saving pump: JBL builds this range around low power consumption, and a filter runs every hour of every day.

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.
• If you are choosing between the i80 and the i100, ask us to confirm the litre range from the box. The two are different sizes and we would rather you ordered the right one.