Blue Pet BL-881W Hang-On Top Sump Filter 8 Watts 600 L/H
The Blue Pet BL-881W is a hang-on-top sump filter delivering up to 600 L/H from an 8W pump, giving you the power of a full sump system — multi-stage mechanical, chemical and biological filtration — without any plumbing or under-cabinet space. It mounts on top of the tank, runs water through clear media trays, and uses a rotating bio-wheel to boost oxygen as the water returns. A smart, space-saving way to handle higher bio-loads on small-to-medium tanks.
Why choose the Blue Pet BL-881W?
- Sump-style filtration, no plumbing — full multi-stage media in a hang-on-top unit.
- Clear media trays for mechanical, chemical and biological filtration you can customise.
- Rotating bio-wheel aeration for strong oxygen exchange.
- Handles higher bio-loads even on smaller tanks.
- Space-saving overhead design keeps the tank interior clear.
Specifications
| Brand | Blue Pet |
| Model | BL-881W |
| Power | 8 watts |
| Max flow | 600 L/H |
| Type | Hang-on-top sump filter |
Which tanks is it best for?
With 600 L/H, the BL-881W suits small-to-medium tanks up to roughly 150L at around 4× turnover. For bigger tanks step up to the BL-883W (800 L/H) or BL-884W (1000 L/H). See our aquarium filter guide.
How to set it up
Sit the filter on top of the tank, load the media trays (mechanical first, then chemical and biological), prime the pump and plug in. Keep it running 24/7, and rinse the mechanical media in old tank water (never tap water) when flow slows. See how to install an aquarium filter and filter media guide.
Frequently asked questions
What size tank is the BL-881W for?
Small-to-medium tanks up to roughly 150L, based on its 600 L/H flow.
What is the bio-wheel for?
The rotating wheel exposes beneficial bacteria to air and water, boosting oxygen and biological filtration.
Do I need plumbing like a normal sump?
No. It hangs on top of the tank and needs no drilling, plumbing or cabinet space.
Can I customise the media?
Yes. The clear trays let you arrange mechanical, chemical and biological media to suit your tank.
How often should I clean it?
Rinse the mechanical media in old tank water when flow drops, usually every 2–4 weeks.
New to filtration? Read our complete aquarium filter guide and how aquarium filters work.
Shipping & Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.
We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
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