How to start with CO₂ in the aquarium: the AqPet Zen System kit
Valerio ChiaradonnaIf you have a heavily planted aquarium and want to see lusher leaves, more vibrant colors, and faster growth, then CO₂ is the next step. The problem is that many people think it's difficult, expensive, or too technical. With the AqPet Zen System CO₂ kit , everything becomes much simpler, even if you are a beginner.
What is Zen System CO₂
Zen System CO₂ is a complete pre-assembled system designed for those who want to start carbon dioxide dosing without wasting time.
It includes:
- an 800 g disposable cylinder;
- a pressure reducer with bubble counter and pressure gauge;
- a high-performance acrylic diffuser;
- everything needed to connect the system to your tank.
It is designed for aquariums from about 100 to 300 liters, so it is suitable for most well-planted domestic aquariums.
Why it's perfect for beginners
- Easy to assemble: you don't need to be a technician; just follow a few steps and adjust the bubble counter to find the right dosage.
- All in one kit: you don't have to go around looking for a cylinder, reducer, tubing, and diffuser separately.
- Guaranteed autonomy: the 800 g cylinder will last you approximately 2 to 3 months, depending on the size of the tank and your settings.
In short, it's a turnkey package for those who want to start utilizing CO₂ without excessive study.

Why choose Zen System CO₂ from Animal Instinct Roma
At Animal Instinct Roma we will guide you step by step:
- we'll help you understand if CO₂ is right for your aquarium;
- we'll explain how to adjust the bubble counter and maintain the right CO₂ dosage;
- we'll show you in the store how to assemble the kit and how to control the flow simply.
In summary
If you have a planted aquarium and want to take it to the next level, Zen System CO₂ is the easiest and safest way to start.
Come to the Animal Instinct Roma store and we'll show you the kit in practice, help you choose the right dosage, and understand how often