will i have to buy the sponge, and media separately?

You don't have to buy the sponge and media. It comes with the pump. But, you'll have to replace them eventually. The sponge can be washed and reused.

Where can I buy the UV light to replace (spec. says it lasts 10,000 hours)?

It is a 5W G23 UVGI Bulb. You can find them on Amazon or e-bay.

What are the dimensions of the filter baskets?

Roughly 3.5"w, 2"d, 2"h.......Obviously Bio media isn't an issue, and any carbon media bag works for the center basket, but the trick is the sponge. I buy fluval 30 size media sponges, cut them in half and turn them sideways and they fit perfect. Somewhat of a pain, but depending on the quantity of fish in your tank, you shouldn't need to replace your sponge but once every few months. And rinse it out about every 20 days or so

where are the part numbers for the replaceable filters and UV

I can tell you the part number which is WTCUH5L. Made by Grech , it’s a 5 watt UV light. So far I have been unsuccessful finding a US source and or equivalent. I’m still looking just in case.

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🌊 Dive into Clarity with the GRECH CBG-500!

VERSATILE FIT - Perfect for aquariums ranging from 10 to 30 gallons.
SURFACE SKIMMER - Eliminates unsightly surface films for a pristine aquarium view.
CRYSTAL CLEAR WATER - Say goodbye to algae and bacteria with advanced UV sterilization!
EFFICIENT FILTRATION - Combines biological and mechanical filtration for optimal water quality.
USER FRIENDLY DESIGN - No batteries required, just plug and play for hassle-free maintenance.

The GRECH CBG-500 5W UV Sterilizer Hang-On Back Filter is designed for aquariums between 10 to 30 gallons, featuring an adjustable 132 GPH flow rate and a powerful 5W UV sterilizer. This filter not only ensures crystal clear water by eliminating algae and bacteria but also includes a surface skimmer to maintain a clean aquarium surface. With its compact dimensions and user-friendly design, it's perfect for all life stages of aquatic pets.

€ 256.05

Duties & taxes incl.

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Excellent communication throughout the order process. Product is perfect.

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Product Dimensions	20.32 x 15.24 x 17.78 cm; 500 g
Item model number	CBG-500
Pet Life Stage	All Life Stages
Allergen Information	Fish Free
Colour	Black
Size	10-30 gallon/132 GPH
Number of Items	1
Quantity	1
Batteries required	No
Batteries Included	No
Item Weight	500 g

GRECH CBG-500 5W UV Sterilizer Hang-On Back Filter, 10-30 gallon/132 GPH

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