[ARRIVED 23-JAN-2026] Up Aqua CO2 Test Indicator Reagent

Quick Facts

• Type: CO₂ indicator reference fluid
• Reference Level: Approx. 30 ppm CO₂
• Use: Glass CO₂ drop checkers
• Suitable For: Freshwater planted aquariums
• Purpose: Visual CO₂ monitoring
• Mixing Required: No – pre-mixed solution

Is this for you?

✔️ Good if:

• You run injected CO₂ in a planted aquarium
• You use a glass CO₂ drop checker
• You want more reliable readings than DIY mixes
• You want simple visual CO₂ monitoring

❌ Avoid if:

• You do not use CO₂ injection
• You expect instant CO₂ readings
• You only run low-tech planted tanks
• You want digital monitoring equipment instead

Why this reagent?

The Up Aqua CO₂ Indicator Solution removes the inconsistency that often comes with mixing homemade reference fluids.

Pre-calibrated to approximately 30 ppm CO₂, it provides a stable baseline for colour-based monitoring inside aquarium drop checkers.

This makes it easier to visually monitor whether CO₂ levels are too low, optimal, or excessive for planted aquariums.

Use made simple

• Add indicator dye to drop checker if required
• Fill with Up Aqua reference fluid
• Install away from direct CO₂ output
• Allow 1–2 hours for colour stabilisation
• Replace solution every 3–4 weeks

Colour Guide

• Blue: Low CO₂
• Green: Optimal CO₂ (~30 ppm)
• Yellow: Excess CO₂

Pair with

• Glass CO₂ drop checker
• CO₂ diffuser system
• Pressurised CO₂ setup
• Planted aquarium lighting
• High-tech planted tank fertilisers

FAQ