• 4-year warranty, as no “teething troubles” are to be expected!
• 25% more filter volume than comparable filters means: better water quality & healthy fish. JBL is taking the more professional approach: instead of just raising the pump capacity, JBL has increased the filter volume, leading to a measurable improvement in water quality.
• SSC engineering* for longer cleaning intervals . (*= Sediment Separation Chamber). This pre-chamber in the filter prevents the filter material clogging up with dirt too quickly. The service life of the filter is significantly prolonged and the aquarium-keeper does not need to completely clean the filter so frequently.
• Fully ready to fit . “Plug and Play” is the secret of all successful technical products. JBL has skilfully applied this golden rule to filters, too: the aquarium-keeper purchases a ready-to-fit filter, complete with all components required.
• Complete with all basic filter materials . Unfortunately a lack of sales staff is a big problem in many pet-shops. There are fewer and fewer sales assistants to give advice. That’s why JBL filters are supplied complete with all the necessary filter material. This leaves no room for mistakes through self-service, and guarantees that the filter is filled correctly.
• Containing lily-pipe (bell-shaped water outlet) for TOP plant growth. Professional plant growers have known for a long time: spray pipes and diffusers are plant killers as they rapidly expel the CO2 which has been carefully added to the aquarium water with great effort. Using the lily-pipe designed by plant experts, the filter water is gently channelled back into the aquarium, to the benefit of the plants.
• Swivelling connection stopcocks. This technical detail is an ideal solution which should in fact be a standard feature of all modern external filters.
  Almost round cross-section allows improved flow through the filter = crystal-clear water . Although at first sight the JBL Cristal Profi external filter does not seem to be round, its external appearance hides a practically round cross-section inside. Decades ago a round cross-section was recognised to be the correct filter form, as it is the only shape which guarantees a steady and even flow of water through the filter chamber. This fact was somehow forgotten again. JBL has reprocessed this optimum filter cross-section and incorporated it in a modern and optically pleasing design. Perfect performance can look good, too!
• Extremely quiet operation (ceramic axis and screening of the rotor casing). Loud filters are cheap, but really get on your nerves after a while. So JBL has pulled out all the stops to design an external filter which runs as quietly as possible. And they have certainly been successful - as everyone who has tried out and listened to the JBL Cristal Profi demonstration models can confirm!
• Simple to install, due to ventilation opening in pump head . This useful detail prevents air collecting in the filter head, which would lead to reduced capacity and running noise.
• Constant efficiency due to grey-coloured hose against algae growth. Grey hoses are far more efficient at discouraging algae growth within the hose than green hoses.
• Two-piece jet hose for more variable installation For those aquarium keepers who still prefer a jet spray hose to the lily pipe, JBL has included a two-piece spray pipe which can also be laid at an angle.
• 100% watertight and safety guaranteed by the smallest possible manufacturing tolerances. And finally the most important reason: perfect safety guaranteed by meticulously precise manufacturing tolerances. After all, who wants a swamp in their living room?
  

The filter is available in 3 sizes:
1. JBL Cristal Profi 120 (aquariums up to 120 litres)
2. JBL Cristal Profi 250 (aquariums up to 250 litres)
3. JBL Cristal Profi 500 (aquariums up to 500 litres)