ANS OPTI GLASS CO2 Nano Checker Set

Description

The ANS OPTI GLASS CO2 Nano Checker Set is a CO2 system component for planted aquariums.

Key Features

• Essential for providing carbon dioxide to aquatic plants
• Promotes healthy and vigorous plant growth
• Compatible with standard CO2 regulator setups

ANS Opti Glass CO2 Nano Checker Set for Small Planted Tanks

This set bundles a compact Opti glass drop checker sized for nano aquascapes, the very tanks that fit a Singapore desk or HDB shelf. Rather than crowding a 30cm cube with a full-size checker, the nano bulb hangs discreetly inside while still giving you the same blue-to-green CO2 read. We point first-time injected-nano keepers to this set because it takes the guesswork out of dosing a small water volume.

Fill it with a 4dKH reference solution and bromothymol reagent, hang it mid-tank away from the diffuser stream, then read the colour a couple of hours after your CO2 timer starts. Small tanks swing fast, so in our warm 27-29C water you’ll want to raise the bubble rate gently and watch the checker settle into a steady lime over a full day rather than chasing it.

Refresh the reagent every few weeks for honest readings. Our CO2 measurement guide and beginner CO2 kit guide cover the rest. See more in CO2 systems.