All ISTA Aluminium Cylinders are refillable at your local aquarium shop or fire extinguisher refilling centers.

CHARACTERISTICS

• Seamless aluminum CO2 cylinder, TUV/DOT approved, safety and quality assured.
• Precise pressure reduced regulator provides accurate and reliable CO2 output.
• Ceramic CO2 diffuser ensures the best dissolving rate, placing it at the bottom of tank can increase CO2 diffusing time in the water. Convenient to change the ceramic disc.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.