Activated Carbon 4 Pouches — 0.8 mm Pellets Pre-Bagged 1 Month - Reef Casa

Reef Casa activated carbon keeps the water in your all-in-one aquarium clear. Four pre-bagged pouches of 0.8 mm pellets, ready to drop into the filter chamber. Saltwater or freshwater. One month supply.

What the manufacturer states

• Activated carbon in 0.8 mm pellets
• Reef Casa proprietary blend
• 4 pouches of high purity carbon, pre-bagged
• Suits saltwater and freshwater alike
• Reduces the need for water changes
• One month supply
• Reef Casa recommends changing it every week for best results

Our advice: carbon is worse than filter floss

Carbon is fundamentally a chemical filter: it absorbs impurities out of your water. But it doesn't stay chemical for long if you forget about it.

Like filter floss, bacteria eventually move in and it turns into a biological filter. Same trap: the day you finally change it, you throw out the bacterial colony that relocated into it — and your tank takes an ammonia spike.

Except carbon has a nastier side. As it ages and reaches saturation, it releases what it had absorbed. Everything it patiently pulled out of your water goes right back in. Old carbon isn't neutral: it works against you.

That's why the pack has 4 pouches. One pouch, one week. Change it, don't forget it.

The rest of your filter chamber

• Reef Casa Filter Floss — mechanical filtration, upstream of the carbon. Same logic: change it often.
• Reef Casa Bacteria Hotel Blocks — biological filtration, placed after the carbon. This is where your bacteria belong, not in your disposable media.
• Reef Casa Filter Media Bags — if you run loose carbon or GFO alongside.

Fits your tank

• Reef Casa Cube 15 — 15 gallon all-in-one nano reef.

Why buy it at ReefSolution

We are an authorized Reef Casa dealer. Secure shipping anywhere in Canada. Free shipping available depending on your order total.

Frequently asked questions

How often should the carbon be changed?

Reef Casa recommends every week for best results — which is what explains the 4-pouch, one-month pack. Our advice: don't stretch it. Saturated carbon releases what it absorbed, and forgotten carbon becomes a bacteria substrate you will end up throwing away.

Can I use it in freshwater?

Yes. Reef Casa lists it as suitable for saltwater and freshwater alike.

Do I need to put it in a bag?

No, all 4 pouches arrive pre-bagged. Drop them straight into the filter chamber.