


🌿 Elevate your aquarium’s vibe with effortless CO2 power!
The HAGEN FL 20g CO2 Cartridges 3-pack offers a reliable, easy-to-use solution for maintaining vibrant aquatic plants. Designed specifically for the Fluval Mini CO2 system, each stainless steel cartridge delivers a precise 20 grams of CO2, ensuring your underwater garden thrives with lush, healthy growth. Made in Taiwan and packaged in a convenient triple set, these cartridges provide continuous, passive CO2 diffusion ideal for tanks up to 20 gallons, making them a must-have for any serious aquascaping enthusiast.




| ASIN | B004G46QQI |
| ASIN | B004G46QQI |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #131,309 in Pet Supplies ( See Top 100 in Pet Supplies ) #2,234 in Aquarium Filter Accessories |
| Brand Name | Fluval |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (295) |
| Date First Available | December 15, 2010 |
| Date First Available | December 15, 2010 |
| Directions | Use as per directed on product. |
| Included Components | All Items listed in Description |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 0.9 x 3.6 x 6.8 inches |
| Item Package Dimensions L x W x H | 4.3 x 3.4 x 0.9 inches |
| Item Weight | 20 Grams |
| Item model number | A7541 |
| Item model number | A7541 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Material | Stainless Steel |
| Model Name | HAGEN FL 20G CO2 CARTRIDGES 3PK |
| Number of Items | 1 |
| Product Dimensions | 0.9 x 3.6 x 6.8 inches; 0.71 ounces |
| Specific Uses for Product | Indoor |
| Style | Modern |
| Target Audience Keyword | fish, fish;algae-eaters; betta-fish; bottom-feeder-fish; cichlid-fish; goldfish; invertebrate-fish; mollusks; octopuses; rays; sharks; snails |
| Warranty Description | Manufacturer Warranty |
B**O
Perfect product for my needs.
Perfect product for my needs.
N**9
Cheap co2 that works
This is a passive co2 system. You will not see microbubbles of co2 diffusing. The CO2 is dissolved into the water column. If you have a smaller tank (20 gal or less) this is a good system to boost slow growing plants without a large investment.
L**R
Needs to last longer
Only downfall is that the canisters only last two weeks each
R**N
Got exactly what i ordered
These little tanks last about a 3-4 weeks when used right. there a bit pricey but well worth it to have reliable CO2 and healthy plants
J**.
... reservoir once a day one canister will last the better part of a year
If you fill the plastic reservoir once a day one canister will last the better part of a year. Fill it in the morning and then at the end of the day and you're still looking at 5 or 6 months. The plants do really well, the tanks are inexpensive, the whole system is great.
P**0
Lasts a few weeks when used properly.
I got this on my 20 gallon and 5 gallon. Both last 3 weeks or more with each cartridge. I fill up the chambers 2-3 times a day. I am not sure how everyone else is using these, but they arent meant for drop check systems, but for passive systems.
C**R
Will past probably 6 months.
1 cartridge has lasted me just over a month so far.
L**Y
Buy it once, shame on you. Buy it twice, shame on me.
These contain CO2, yes, but even for my extremely modest purposes - a 1.8 gallon shrimp tank with CO2 on only with the lights ~7-8 hours a day - this is hugely cost-ineffective. Each one lasts me a bit more than 2 weeks & I still haven't figured out what to do with the old cartridges! I just emptied a cartridge today actually and happened to have an extra Fluval 45g CO2 cartridge, which fits perfectly. I've read you can find cheap CO2 cartridges to replace these at bike or gun shops.
M**D
Keine Kommentare meine erste Erwartung wurde gelöscht traurig aber war
A**N
exacto lo que compre
C**D
Lasted me 3 months so far. Can't argue with that for the price
M**.
These CO2 refills are wonderful. My plants are thriving. I can hardly keep up with them. I wanted to see what the difference would be between non-CO2 supported aquarium and one with. This product has allowed me to see the difference. Now I know that I can support my smaller tanks with this product while I look into investing in non-disposable for the larger tanks.
T**I
Very easy to install
Trustpilot
3 weeks ago
1 month ago