Description
xOverview
The hygger Aquarium HOB Filter 315 GPH is a space-smart, external filtration solution designed for 40-75 gallon aquariums. Mounted on the outside of the tank wall, it keeps the interior free for décor and plants while delivering reliable filtration and steady water movement. The return flow creates a gentle mini waterfall, producing a calm trickle that many hobbyists associate with a healthy, well-oxygenated aquarium soundscape.
Why it fits your setup
Built for ease of use, this hang-on-back filter reduces tank maintenance disruption by staying outside the water. You can access the unit without leaning over the tank, which helps keep fish stress low during cleaning. The extendable intake tube lets you tailor depth to your tank, and the top flow control knob enables quick adjustments to match your bioload and viewing preference.
- Space-saving external design keeps the tank floor clear for more swimming space.
- External mounting minimizes disturbance when performing routine maintenance.
- The water returns as a gentle mini waterfall, aiding circulation and oxygenation.
Flow, depth, and customization
With a maximum flow of 315 GPH, this filter offers flexible performance. The intake tube extends to suit tank depth, and the inlet includes a sponge to protect small fish or shrimp from being drawn in. This adaptability helps you tune filtration to your tank’s size and inhabitants without swapping equipment.
- Top knob adjusts flow up to 315 GPH for different stocking levels.
- Extendable intake tube adapts to various tank depths.
- Inlet sponge prevents small fish or shrimp from being sucked in.
Filtration media and maintenance
Filtration is designed with two replaceable media options, so you can customize filtration as your tank evolves. The filter cartridge combines dual-sided sponge cotton with ultra-activated carbon to capture waste, odors, and discoloration, while the bio-filter plate provides a larger surface area for beneficial bacteria. Media can be added or replaced as needed, making the system suitable for both beginners and experienced hobbyists.
- Two media options: cartridge with sponge + carbon, plus a bio-filter plate.
- Media can be mixed, added, or replaced to fit your setup.
Maintenance reminders
An indicator light reminds you when it’s time to replace filter pads, helping you maintain water clarity with ease. The external hang-on design supports straightforward maintenance routines without disturbing your aquatic residents.
FAQ
Q: What tank size is this filter best for?
A: Designed for 40-75 gallon tanks with adjustable flow.
Q: Can I customize the filter media?
A: Yes, you can replace cartridges or add bio-filter plates to suit your setup.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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