Here is a list of frequently asked questions about Carbon Dioxide diffusers, reactors, and glassware used in planted aquascaped aquariums.

How long will a CO2 bottle or tank last?

A 30 gallon aquarium consumes approximately 1/2 to 1 pound (.2-.5 KG) of CO2 in 1 month if CO2 is dosed only during the day. This will vary depending on the efficiency of the CO2 setup and the growth of the plants.

How often do I need to change the Drop Checker test fluid?

It is advisable to change the fluid in the tester every 4-8 weeks.

How often should I clean the diffuser?

Clean diffusers every 2 weeks or max 30 days. 

Read More: Aquascaping 101: An Aquascaping Technique Guide

How do I clean diffusers and Glassware?

Always handle the diffusers carefully. Install and remove the tubing carefully, heating it with hot water as needed. Try not to touch the ceramic with bare hands.

Monitor and clean your diffuser regularly. Observe the performance and appearance of your diffuser. The in tank type CO2 diffuser should be cleaned approximately every 4-6 weeks or as needed. Clean the in-line type diffuser roughly every six months or as required.

Clean the diffuser carefully, soaking and cleaning with a mixture of 3 parts water and 1 part bleach. Never rub the ceramic diffuser part.

Leave diffuser or glass pipe to soak for 30 minutes.

Rinse the diffuser carefully with fresh water, do not rub or touch the ceramic of the diffuser.  Soak the diffuser in aquaLife Dechlorit at a triple dose in a small amount of water for a few minutes after rinsing.

It is convenient and recommended to keep two diffusers for the aquarium and rotate cleanings. This avoids any downtime.

Read More: 1 Aquascaping Solution: The Basics Introducing Aquascaping

How big a ceramic diffuser do I need?

Up to 6 gallons need ceramic diameter of 15-20 mm

Up to 18 gallons need 20-25 mm

Up to 75 gallons need 30 mm

Up to 100 gallons need 40 mm

Up to 150 gallons need 50 mm

Multiple smaller diffusers can also be used for larger tanks. Inline diffusers (Atomizers) and reactors are also efficient for larger tanks.

Read More: What is Aquascaping?

Hydra Aquatics Glass Diffuser
CO2 diffusers and Inline diffusers or atomizers by UP Aqua
Turbo Diffusion are reactors that are highly efficient for larger aquariums or those with sump filters This is tip sheet for this unit

To learn about the premium Hydra Aquatics CO2 glassware with review see this article.

More Tips on CO2

Contact SevenPorts

Need help getting started with your planted aquarium? Contact the experts at SevenPorts for more information today! We are your resource for aquascaping techniques, fish care, plant growth tips, algae control, and more!

Further Reading:

Aquascaping with Jeff Miotke Part 1 Hardscaping with Q&A

Aquascaping with Jeff Miotke Part 2 Planting a Rimless Aquarium with Q&A

How to Maintain and Siphon Aquascaped Aquarium Substrates and Soils?

Professional Tools for Cultivating Your Planted Aquarium