CO₂ Test Indicators & Bubble Counters11 products

Keep your planted aquarium perfectly balanced with our range of CO₂ Test Indicators and Bubble Counters — essential tools for achieving precise carbon dioxide levels and healthy plant growth.

These accessories help you measure, monitor, and adjust CO₂ flow accurately, ensuring that your plants receive just the right amount of carbon dioxide without harming fish or wasting gas.

Our selection includes drop checkers, indicator liquids, and inline bubble counters compatible with most aquarium CO₂ systems — whether beginner setups or professional installations.

Explore our collection:

  • CO₂ Drop Checkers – visually monitor CO₂ concentration with colour indicators

  • Indicator Solutions – refill liquids for accurate CO₂ level readings

  • Bubble Counters – track CO₂ bubble rate for precise flow control

  • Inline & Mounted Counters – easy installation for external or internal setups

  • Safety Check Valves – prevent backflow and protect your regulator

Each product is carefully chosen for accuracy, reliability, and compatibility, helping you maintain a thriving planted tank with consistent CO₂ levels.

11 products