Aquarium CO2 Kit for 10–30 Gallon Planted Tanks, Bio-Fermentation System with Diffuser and Reusable Bottle

This aquarium CO2 kit offers planted-tank keepers a more approachable alternative to large cylinders, regulators, and electronic solenoids. Its yeast-driven bio-fermentation process produces a steady CO2 supply for approximately 50–60 days per round, depending on room temperature.

Everything needed to begin is included: a reaction bottle, bio powder, flexible line, acrylic micro-bubble diffuser, two suction cups, and a sealing cap O-ring. The system suits 10–30 gallon aquariums and uses non-adjustable passive flow.

Key Features

• The thick gel-matrix formula releases gas slowly and smoothly, providing a more consistent routine than basic DIY sugar mixtures.
• One complete starter setup puts the bottle, bio powder, tubing, diffuser, suction cups, and O-ring together in a single kit, making the first installation straightforward.
• The main reaction bottle is reusable and can be refreshed using Aquario Neo CO2 Refill Packs, so the same bottle can serve through repeated cycles until its gel matrix is consumed.
• A dosing guideline of one bottle per 20 gallons makes system sizing clear; larger planted layouts can run multiple bottles at the same time.
• The included micro-bubble diffuser mounts low inside the aquarium using the two clear suction cups, keeping the delivery setup securely positioned.
• Each activation lasts approximately 50–60 days, although warmer room temperatures speed up daily output and shorten the total operating period.

Specifications

• Brand: Aquario
• Product type: Natural bio-fermentation generator kit
• Aquarium size: 10–30 gallons
• Coverage: One bottle per 20 gallons
• Dosing life: Approximately 50–60 days
• Flow: Non-adjustable passive flow
• Bottle quantity: 1
• Bio powder quantity: 1 packet
• Diffuser quantity: 1
• Flexible line quantity: 1
• Suction cup quantity: 2
• Sealing cap O-ring quantity: 1
• Compatibility: Do not use with solenoids, needle valves, or toggle taps.

Because fermentation runs continuously and cannot be switched off overnight, tanks smaller than 10 gallons carry an over-gassing risk for livestock. For a nano setup, run a small air pump at night or create gentle surface agitation. Keep the active bottle upright and never drop or shake it.