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Description
[ARRIVED 23-JAN-2026] Up Aqua CO2 Test Indicator ReagentUp Aqua CO Test Indicator Reagent 30 ppm Reference Fluid Pre mixed CO reference solution for accurate drop checker readings in planted aquariums Quick Facts Type: CO indicator reference fluid Reference Level: Approx. 30 ppm CO Use: Glass CO drop checkers Suitable For: Freshwater planted aquariums Purpose: Visual CO monitoring Mixing Required: No pre mixed solution Is this for you? Good if: You run injected CO in a planted aquarium You use a glass CO
Up Aqua CO₂ Test Indicator Reagent – 30 ppm Reference Fluid
Pre-mixed CO₂ reference solution for accurate drop checker readings in planted aquariums
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.
Common mistakes
- Expecting instant colour changes
- Placing drop checker directly beside CO₂ diffuser
- Leaving solution unchanged for too long
- Using with saltwater aquariums
- Confusing delayed response with inaccurate readings
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
Drop checkers do not show instant CO₂ levels — they provide a delayed average. This is useful because it reflects long-term stability rather than short spikes.
FAQ
What does this reagent do?
It provides a calibrated reference fluid used inside CO₂ drop checkers for planted aquariums.
Is this already mixed?
Yes. It is a pre-mixed 30 ppm reference solution.
How often should I replace the fluid?
Replace every 3–4 weeks for reliable readings.
Can I use this in saltwater tanks?
No. This product is designed for freshwater planted aquariums only.
Does this include the drop checker?
No. This listing is for the reagent fluid only unless otherwise stated.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy