Carbon dioxide regulator for aquariums Key benefits — why you need it Delivers a reliable, controlled source of CO2 so plants get the carbon they need for steady, healthy growth and stronger coloration. Simple setup and compact design reduce installation time and clutter, so you can start improving water chemistry without technical hassle. CO2 dissolve rate improves gas transfer into the water, increasing efficiency and reducing wasted CO2. What it does (core functions) Regulates CO2 delivery to the aquarium to support plant photosynthesis and balanced water chemistry. Optimizes dissolution of carbon dioxide into the water column for better uptake by aquatic plants. Integrates cleanly with standard aquarium tubing for fast connection and reliable operation. Key features and attributes Easy installation: Designed for quick, userfriendly hookup so you can connect the regulator and tubing without special tools or extensive adjustments. CO2 dissolve rate: Engineered to promote efficient gas transfer so plants receive the intended CO2 concentration with less loss to the surface. Compatible with standard tubing: Fits water pipes with an inner diameter of 4 mm for direct compatibility with common aquarium setups. Sleek, unobtrusive design: Aesthetically minimal profile that improves functionality without distracting from the tank's appearance. Stable performance: Provides consistent CO2 delivery to help maintain target levels and support plant health. How this solves common problems Reduces trialanderror: Consistent regulation and dissolve efficiency make it easier to reach and maintain target CO2 levels, cutting down on guesswork. Lowers CO2 waste: Improved dissolution means more of the gas enters the water where plants can use it rather than escaping at the surface. Fits existing setups: Compatibility with 4 mm tubing lets you add CO2 control without replacing your current plumbing or buying specialized adapters. Practical applications and use scenarios Planted freshwater aquaria: Use the regulator to supply steady CO2 for stem plants, carpeting species, and mosses to promote denser growth and richer coloration. Small display tanks and public exhibits: Maintain stable CO2 for visually healthy plants in desktop tanks, office displays, or retail aquarium stands where appearance and reliability matter. Upgrading an existing CO2 system: or add a compact regulator to improve dissolution efficiency and streamline your tubing layout when integrating with current equipment that uses 4 mm inner diameter pipes. What to expect after installation Faster establishment of desired CO2 levels and improved plant response within days to weeks, depending on plant type and lighting. A cleaner, more integrated look in your aquarium area with a compact, unobtrusive component. Easier tuning of CO2 delivery for routine maintenance and water parameter control. Compatibility note Designed specifically for use with water pipes having an inner diameter of 4 mm. Ensure your tubing matches this size for a secure fit and performance. If you want consistent CO2 delivery that's easy to install, integrates with standard 4 mm tubing, and improves dissolution into the water, this Carbon dioxide regulator delivers practical performance and a clean, lowprofile look for planted aquaria.