Co2 Cylinder Selection
Material
Aluminium and alloy are the two types of CO2 cylinders available. When compared to Alloy, Aluminium is slightly more expensive, but provides significant benefits because it weighs less, has a polished surface, and does not rust.
Size
When selecting your Co2 cylinder, do ensure that it can fit into your cabinet along with your regulator.
Selecting the right cylinder size for your aquarium, a 2 liter Co2 cylinder will last 3-4 months with 1 bubble per second for 8 hours a day in a standard 2 feet fish tank. Below is the recommendation for tank size to cylinder size:
| Nano - 30cm | 30cm - 45cm | 60cm - 90cm | 90cm and above |
|---|---|---|---|
|
0.5L - 1L |
0.8L - 2L |
2L - 4L |
4L |
Thread
In Asia W21.8 thread head is commonly used, the thread head is the thread connecting to your regulator, when purchasing a cylinder do avoid G5/8 thread head, as this is commonly used in the USA only. All Townbright cylinders and regulators are W21.8 thread head.
W21.8 thread head is generally used in Asia; the thread head is the thread that connects to your regulator; avoid G5/8 thread head when purchasing a cylinder, as this is commonly used in the United States. All Townbright cylinders and regulators are W21.8 thread head.
Used Co2 Cylinder Recertification
The manufacturing date is printed on the cylinder.
The cylinder must be recertified every 5 years in Singapore. Recertification will cost around $20 and will last for another 5 years.
Co2 Cylinder Refill Service
Most aquarium shops provide refill service but it is not immediate refill.
For immediate refill service you can visit System & Control Engineering Co @ 22 Boon Keng Rd, Singapore 330022 or WKS Industrial Gas Pte Ltd @ 22 Tuas Ave 10, Singapore 639145.
Things to Take Note When Using The Co2 System
Do not place CO2 Cylinder under the sun or hot area
Do not place CO2 Cylinder in a damp area if using Alloy cylinder
Use a check valve to prevent water from flowing back into the cylinder