How often does these need to be changed i have a 190l tank i.do water changes every 2weeks

Carbon packs are normally recommended to be changed every 4-8 weeks depending on use and cleanliness of aquarium.

Will this fit an Aquaclear 20?

This item is specifically designed for Evo, Spec & Flex filters. We could not say it will 100% work with a different item, even though it may well do.

What size are these? Width & length? Want to use instead of aqua filters

The product - as indicated in the illustration - is contained in 3 sealed package in a box. It actually has the very small size of a grain. I bought mine to clear the water clear in hyacinth bulb glasses. This product is similar to "Eheim Karbon" which I bought for the same purpose. Since I do not have an aquarium, I regret not being able offer an opinion as to whether either of the products I have bought would be appropriate to meet the enquirer's needs. Adrian Clark

will they fit an external 307 filter ?

I just put two bags in my 307 :)

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fluval Replacement Carbon for Fluval Flex/Spec/Evo - 3 bags,White

Fluval Replacement Carbon for Fluval Flex/Spec/Evo - 3 bags,White

Product ID: 49360655

Details

Brand
Fluval
Item form
Granules
Item weight
5.82 Ounces
Liquid volume
34 Litres
Manufacturer
Rolf C Hagen

💧Crystal clear water clarity

🧴3-pack value & convenience

🛡️Heavy metals & odor removal

€ 15.90

Duties & taxes included

In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belgium.

Secure transaction

Description

💧 Elevate your aquarium game with crystal-clear confidence!

TAILORED FIT - Specifically designed for Fluval Flex, Spec, and Evo models
PURIFY LIKE A PRO - Removes heavy metals, odors, and discoloration for pristine tank water
TRIPLE PACK POWER - Three bags included for extended, hassle-free maintenance
SAFE ALLERGEN FREE - Non-toxic granules ensure a healthy environment for your aquatic life
CRYSTAL CLARITY BOOST - Absorbs impurities to keep your aquarium sparkling clear

Fluval Replacement Carbon is a premium filtration media designed for Fluval Flex, Spec, and Evo aquariums. This 3-pack of granulated carbon efficiently removes heavy metals, odors, and discoloration, ensuring crystal-clear water and a healthy aquatic environment. Trusted by thousands with a 4.6-star rating, it offers allergen-free, easy-to-use filtration that keeps your tank pristine and your fish thriving.

Specifications

ASIN	B0049RIUWK
Allergen Information	Allergen-Free
Best Sellers Rank	6,379 in Pet Supplies ( See Top 100 in Pet Supplies ) 37 in Aquarium Filter Accessories
Brand	Fluval
Brand Name	Fluval
Country Of Origin	China
Customer Reviews	4.6 out of 5 stars 8,364 Reviews
Global Trade Identification Number	00015561113779
Included Components	3x Carbon Filters
Item Form	Granules
Item Type Name	Fluval Spec/Flex/Evo Replacement Carbon (3 bags)
Item Weight	168 g
Item form	Granules
Item weight	168 g
Liquid Volume	34 Litres
Liquid volume	34 Litres
Manufacturer	Rolf C Hagen UK Ltd
Manufacturer Part Number	A1377
Model Number	A1377
Number of Items	1
Pet Type	Fish
Target Species	Fish
UPC	015561113779
Unit Count	1 count
Unit count	1 count

Reviews

J**B

Small bags so check the details

Very good but smaller than required. In other words I didn't read the details properly so I made the mistake not the seller. However, they are still being used.

16.06.2026

F**E

Good Purchase.

Exactly what I wanted - nice size and good value for money.

20.12.2025

C**Z

Good

Good product does the job

4.01.2026

G**N

Your fish will love it!

Completely renewed my Fluval 407 filter with these, seacham bio, extra ceramic rings and new Fluval foam, the water quality is amazingly clear after only two days!

23.11.2025

T**L

Would buy again

Excellent product, good value for money. Would buy again.

12.12.2025

T**K

Recommended

These are great a perfect for our filter system

23.01.2026

K**S

I can't believe crystal clear it is !

Unbelievable I did water change yesterday and clean , added this to my filter and I can't believe crystal clear it is !

3.03.2026

D**N

Brilliant items

Purchased as spares

14.01.2026

K**M

Beklentimi karşıladı

Fluval 34l akvaryumdaki karbon filtre ömrü dolduğu için aldım. Hem fiyat çok uygun hem de görevini iyi bir şekilde yapıyor.

29.08.2024

S**O

Consiglio è davvero un buon prodotto

Efficacia di Purificazione Superiore La formula, descritta come "specie bersaglio polvere" (probabilmente carboni attivi di alta qualità in polvere compressa o granuli fini), è estremamente efficace nella rimozione delle impurità. Acqua Inodore: Se notate un leggero odore "stagnante" o sgradevole nella vostra vasca, questo carbone lo elimina completamente in poche ore, lasciando l'acqua inodore e fresca. Rimozione di Tinture e Odori: Perfetto per neutralizzare residui di farmaci dopo un trattamento, o per rimuovere il leggero ingiallimento (tintura) causato da legni o torba. L'acqua torna ad essere limpida e cristallina. Sicurezza per i Pesci: L'azione di purificazione mirata è delicata sui pesci (specie bersaglio pesce) e non altera i parametri essenziali come il pH (a meno che non sia specificamente formulato per farlo, ma il carbone standard è neutro). I miei pesci sono visibilmente più a loro agio in un ambiente privo di sostanze chimiche indesiderate. ✅ Praticità e Durata I 168 grammi sono una quantità ideale per un ciclo di pulizia standard (solitamente 2-4 settimane, a seconda delle dimensioni della vasca). Facile da Usare: L'inserto si adatta perfettamente alla maggior parte dei filtri esterni e interni. È sufficiente posizionarlo nell'ultimo scomparto del filtro per un'azione immediata. Potente Assorbimento: La sua struttura porosa e il formato in polvere/granuli fini garantiscono una superficie di contatto massimizzata, consentendo al carbone di assorbire una maggiore quantità di inquinanti rispetto ai formati più grossolani. In sintesi, per chi cerca un'acqua impeccabile e vuole assicurare ai propri pesci un ambiente privo di odori, colorazioni indesiderate e residui chimici, questo inserto ai carboni attivi è un prodotto di altissima qualità. Consigliatissimo!

29.11.2025

D**L

Super klare Kaufempfehlung

Alles wunderbar in kleinen säckchen abgepackt die vor dem einlegen in den Filter einmal abgespült werden müssen sie erfüllen ihren Sinn und Zweck super und haben eine gute Haltbarkeit im Filter

14.09.2025

C**A

Recomendación

Excelente servicio y atención, lo recomiendo ampliamente

2.08.2026

E**N

Good product. Speedy delivery

Good product for the aquarium’s water quality.

26.12.2022

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

€ 15.90

Duties & taxes included

In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belgium.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ali H.

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

1 day ago

View all Trustpilot reviews