There are 2 sizes of this product on a different website. Can anyone verify if this is the 21 or 31 cubic in. version?

I am unsure what u mean by 21/31 cubic in, I bought this cartilage for my 100 gallon per day aquatic life ro filter and have since put out hundreds of gallons of 0ppm water, it has started changing color but still has long way to go, without the di cartilage the filter puts out 15ppms with the intake water being just under 200ppm

How often do i need to replace this cartridge?

It's refillable. Top cap is removable and replacement resin may be purchased much cheaper than a cartridge. Depends on amount of water passed through it as well as how contaminated it may be.

Will I need to purchase any tubing or any other additional pieces aside from the RO Buddie itself?

Yes you will need extra tubing for the r/o buddie. I just got my r/o buddy a few days ago. Make sure you cut the tubing clean. Otherwise it will leak. first 10 gallons have been 0 ppm. And my saltwater tank looks amazing.

My cartridge does not remotely look green, it's more like a shimmering black, purple, and blue. Anyone else had that problem?

Is it blue when new or it turned blue? Mine is green. I think if it's blue it's used.

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

Aquatic Life DI Color Changing Mixed Bed Resin Cartridge

Product ID: 260510229

Details

Brand
Aquatic Life
Item form
Granules
Item weight
449 g
Number of Packs
1
Unit count
1 Count

👀Clear cartridge for easy resin status check

🔄21-cubic inch resin capacity

🧩Includes mounting clips for seamless RO Buddie integration

252.99 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Description

💧 Stay crystal clear with every drop – never miss a resin change!

TRUSTED QUALITY - Backed by Aquatic Life’s 4.6-star rating from over 1,300 users, ensuring reliability and satisfaction.
VISUAL RESIN STATUS - Transparent cartridge design lets you instantly see when resin needs replacement—no guesswork.
EFFORTLESS INSTALLATION - Comes with mounting clips tailored for RO Buddie, making setup quick and hassle-free.
PRECISION RESIN CAPACITY - 21 cubic inches of high-performance mixed bed resin ensures superior water purification.
OPTIMIZED FOR AQUATIC HEALTH - Specifically engineered to deliver pristine water quality for your fish, supporting a thriving aquatic environment.

The Aquatic Life DI Color Changing Mixed Bed Resin Cartridge offers 21 cubic inches of premium resin in a clear, easy-to-monitor cartridge. Designed for seamless integration with the RO Buddie system, it ensures optimal water purity for aquatic life. Trusted by thousands with a 4.6-star rating, this cartridge combines convenience, performance, and reliability for professional-grade water filtration.

Specifications

ASIN	B00DSP57BQ
Allergen Information	Nut Free
Best Sellers Rank	#26,160 in Kitchen ( See Top 100 in Kitchen ) #93 in Water Filter Cartridges
Brand Name	Aquatic Life
Customer Reviews	4.6 4.6 out of 5 stars (1,370)
Global Trade Identification Number	00810957012427
Included Components	Aquatic Life DI Color-Changing Mixed Bed Resin Cartridge for RO Buddie
Item Form	Granules
Item Type Name	Resin Cartridge
Item Weight	449 g
Manufacturer	Aquatic Life
Manufacturer Part Number	330242
Model Number	330242
Number of Items	1
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	810957016685 810957012427
Unit Count	1 Count

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

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks 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.