CO2 cylinder 2-3L

Performance & sizing

Core numbers for matching this unit to your tank and electrical plan.

Power

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Flow rate

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Noise

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Dimensions

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Price range

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Tank fit (L)

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Consumables & maintenance

Disposable cylinders and diffuser ceramics need refills or replacement on a usage basis; leak-check fittings when swapping bottles.

Description

A 2 to 3-liter CO2 cylinder is a common choice for medium-sized planted aquariums. It provides several months of CO2 injection before needing a refill, depending on bubble rate and tank size. Always handle and transport cylinders upright and secured.