So juwel recommend changing this yearly, why?. The bacteria won’t colonise overnight and surely won’t just vanish after 12 months of use.

I have not changed any of my Cirax cartridges so far & no intention of doing so unless I start to see ammonia or nitrite rises. I have 3 in my filter & give one of them a shake & rinse in the water removed from the tank during water changes. I clean just one of the cartridges as above every 2 weeks or so. Wouldn't do them all together! Ammonia & Nitrites always at zero.

Will this fit in my trigon 190 filter

Hi Diane. Yes it would. Clean in old tank water roughly every month. Regards Carol

Hi, i was wondering if i could use these in my juwel bioflow super system, if i can where do they go?

Cirax is a ceramic media which holds the bacteria required for eliminating ammonia and nitrite in the aquarium,bear in mind this bacteria does not occur overnight and takes time to become established. The green filter in the cage of your system is the Nitrax filter which performs a similar task and is the one to replace with the Cirax cartridge.If you are having problems with your aquarium water,changing to this media will not immediately provide a solution and give you the same problem.The secret is patience and to use a water treatment that works,for this I recommend Seachem Stabilty, it will mature your filter if you follow the instructions. I had problems getting my Bioflow filter to mature and tried virtually everything on the market to get it to work, Seachem Stability and Seachem Prime are the only two water treatments I use now and I never have water issues,hope this is of use,good luck.

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♻️ Elevate your aquarium’s ecosystem with sustainable, high-performance filtration!

COMPACT EFFICIENT - Space-saving granules deliver peak filtration performance without bulk.
ECO CONSCIOUS DESIGN - Crafted from 100% recycled synthetic materials—filter smart, live green.
MAINTENANCE MADE EASY - Simple staged replacement ensures beneficial bacteria thrive without disruption.
SEAMLESS COMPATIBILITY - Tailored for Bioflow 3.0 filters across multiple Juwel aquarium models—plug & play perfection.
BIO OPTIMIZED FILTRATION - Maximize water clarity and fish health with advanced porous media designed for biological cleaning.

The Juwel Cirax Bioflow 3.00 Compact Filter Media is a highly porous, synthetic filtration tray designed specifically for Bioflow 3.0 filters in Juwel aquariums. Made from 100% recycled materials, it ensures superior biological cleaning to maintain pristine water quality and optimal fish health. Lightweight and compact, it requires replacement every 9 to 12 months with staged changes to preserve beneficial bacteria colonies.

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Pet Type	Fish
Product Dimensions	0.39 x 0.39 x 0.39 cm; 210 g
Item model number	JU88056NET
Item Form	Granules, cuboid
Material Composition	100% Synthetic
Outer Material	Synthetic
Inner Material	See description
Colour	White
Size	M
Volume	0.1
Number of Items	1
Quantity	1
Care Instructions	Disposable
Compatible Devices	Filters
Special features	For use with filters
Batteries required	No
Batteries Included	No
External Testing Certification	TÜV GS, CE
Recycled Content Percentage (%)	100
Item Weight	210 g

Juwel Cirax Bioflow 3.00 Compact Filter Media

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