Ocellaris 850 and 850UV Spares & Accessories

Aqua One Ocellaris 850 Filter Aqua One 137i Impeller Aqua One Bio Nood Aqua One 138s Sponge Bio Rings Plus Aqua One Carbon Aqua One 137w Wool Pad Aqua One 137s Sponge Pads

Getting The Best From Your Aqua One Ocellaris 850 and 850UV Canister Filter

Aqua One’s New Ocellaris range of external filters look set to continue the success of their CF and Advance canister filter ranges, both of which have proved very reliable and continue to be backed by the best spares support in the aquatic industry. The Ocellaris 850 or 850UV external filters are simple, modern and robust. Intended for set ups of between 150 and 300l with a maximum output of 850l per hour , the Ocellaris 850 or 850UV feature an excellent array of filter media including, polymer wool, blue and black sponge and ceramic Bionoodles. This combination combined with regular maintenance should keep your set up sparkling clear.

Here at Aqua One Parts we have Aqua One Ocellaris 850 hosing available by the metre, as well as the essential 137w white polymer pads, 137s coarse blue sponge pad, 138s fine black sponge pad and 600g Bionoodles. Lets not forget a new UV tube for your Ocellaris 850UV every six months. Do remember that adding a small net media bag filled with Aqua One Advance carb activated carbon to your Ocellaris 850 filter will make a substantial difference to water quality and clarity.

Here’s our suggested maintenance Regime for your Aqua One Ocellaris 850 or 850UV External Filter based on our extensive experience of this filter:


Check visually to make sure that the Ocellaris 850 or 850UV is flowing well and that the intake strainer isn’t blocked with debris.

Four to Six weekly

Clean the Ocellaris 850 or 850UV out, rinsing the 137s and 138s sponge pad thoroughly in some aquarium water which is then thrown away. Clean the Bio Noodles the same way. The 137w white polymer pad in the top tray should be thrown away and replaced as it cannot be rinsed. If you have added a bag of Advance carb change this as well as it is an adsorbative and cannot be rinsed clean. Have some Bionoodles or BioRing Plus on hand and exchange a few pieces for new ones to keep your filter media fresh and the bacteria culture lively.

Six monthly

Treat your Ocellaris 850 to a new 138s sponge pad as the cell structure will be starting to collapse on the old one. Don’t change the 850UV out, rinsing the 137s sponge at the same time as too many ‘good’ bacteria are lost all at once. If you have an 850UV its time to fit a new UV tube.


Fit a new 137i impeller and a new main sealing ring to prevent leaks and maintain performance. Check all pipework and connections for leaks. If you have any doubts about the taps change them at the same time. Half an hour spent now means a whole year’s worth of trouble free performance from your Ocellaris 850 or 850UV.

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