ClearCurrentGreen Honeycomb Aquarium Filter Cube
- Free shipping with USPS
- 93,500+ happy customers
- 30-day guarantee
Popular item — selling fast
Only 3 left in Green, size 3.94 × 3.94 × 3.94 inches
Ships by Sat, October 31
Halloween Sale ends Sunday, Nov 1
The more you add, the more you save
2 ITEMS
10%
3 ITEMS
15%
4 ITEMS
20%
Clearer Aquarium Water Starts With One Small Cube
That cloudy, yellow water hides the fish you set the tank up for.
It can smell, too.
ClearCurrent is a filter cube with activated carbon inside.
Open honeycomb channels pull in dissolved waste, while the outer layer catches the bigger stuff first.
That outer layer is what keeps the block from clogging so fast. Drop it in, and it starts working.
Measures 10 x 10 cm — a cube, not a sheet you have to cut down.
A simple filter cube for clearer-looking water
✓ Stop staring at cloudy, yellow water
Activated carbon pulls dissolved waste and tannins out of the water, so your fish are the thing you see — not the haze in front of them.
✓ Water you actually want to look at
That damp, organic odor comes from waste sitting in the water. Carbon holds onto it instead of letting it drift into the room.
✓ Two layers, zero clogs
Most blocks load up at the surface and choke off your flow. The outer layer here catches larger debris first, so the honeycomb channels inside stay open and working.
✓ A 30 second fix, not a chore
Hold it under the tap, squeeze, put it back. It takes about a minute and saves you pulling the whole filter apart.
✓ Standard size, standard chamber
It won't flatten or collapse in the filter chamber the way loose media bags do, so water keeps moving through it instead of around it.
What you get today
- ClearCurrent honeycomb carbon filter cube
- Activated carbon for odor and discoloration
- Outer layer that catches larger debris first
- Ready to use — rinse and drop it in
- Free tracked shipping
Production runs in batches — once this batch sells out, restock pricing may change.
Try ClearCurrent for clearer-looking aquarium water with this limited-time offer.
If it doesn't deliver the intended result or isn't as easy to use as described, return it for a full refund.
Will it fit my filter?
The cube measures 10 x 10 cm. Check the open space in your filter chamber or sump before ordering. It sits in the flow path — it does not need to seal the chamber.
How soon will the water look clearer?
Carbon works on dissolved color and odor, so a yellow tint usually fades first. Cloudiness from algae, overfeeding, or a new tank cycle has a different cause and needs a water change or a feeding adjustment too.
How often do I rinse it?
Rinse it when you notice flow slowing down, or during your normal filter cleaning. Use tank water or dechlorinated tap water.
Is it safe with shrimp and sensitive fish?
Activated carbon is a standard, inert aquarium medium. Rinse the cube before first use to clear any loose carbon dust.
- Rinse the cube under running water for about 30 seconds to flush out loose carbon dust.
- Place it in your filter chamber, sump, or flow path where water passes through it rather than around it.
- Squeeze and rinse it during your regular filter maintenance to keep the channels open.
- Replace the cube once rinsing no longer restores flow, or once odor and discoloration return.
- Size: 10 x 10 cm cube
- Material: Activated carbon block with a polyurethane outer layer
Every order is covered by our 30-day guarantee, starting the day your order arrives. Many issues are solved without sending anything back — damaged, wrong, or ill-fitting items are typically replaced free.
Changed your mind? Return it within 30 days of delivery for a refund — you cover the return postage, and there is no restocking fee. See our Refund policy.
No extra taxes or shipping charges. What you see is what you pay.
Your order is dispatched within 1–2 business days and delivered within a further 3–8 business days — most orders arrive within 4–10 business days. Free shipping with USPS , and you'll get a tracking link the moment it ships, so you can follow it door to door.
Same delivery time for every country we ship to. Full details in our Shipping policy.
