JBL ProAquaTest CO2-pH Permanent Refill

JBL ProAquaTest CO₂-pH Permanent Refill – Indicator Solution Top-Up

Refresh your drop checker with the JBL ProAquaTest CO₂-pH Permanent Refill. This top-up indicator/reference solution restores accurate, continuous CO₂ monitoring in freshwater planted aquariums, helping you fine-tune injection and maintain stable pH.

Why choose the refill?

• Maintain accuracy: Fresh solution means reliable colour changes.
• Cost-effective: Replace liquid only, reuse your existing indicator bell.
• Easy to use: Fill, mount, and read at a glance (blue/green/yellow).

What’s included

• CO₂ indicator / reference solution (refill bottle)

Note: This is a refill pack. It does not include the in-tank indicator (drop checker) or suction cup. Use with your existing JBL ProAquaTest CO₂-pH Permanent device.

How to use

1. Remove the indicator from the tank and discard old solution.
2. Rinse with RO/distilled water (no detergents).
3. Fill to the mark with the refill indicator solution.
4. Reattach inside the aquarium, away from direct CO₂ bubbles and strong flow.
5. Allow up to ~2 hours to equilibrate, then read the colour:
   • Blue – CO₂ low
   • Green – Ideal (~20–30 mg/L)
   • Yellow – CO₂ high

Pro tips

• Refresh the solution every 3 – 4 weeks or after large water changes.
• Place at mid-depth with gentle circulation for representative readings.
• Keep KH stable for consistent CO₂ behaviour; test KH regularly.

FAQs

Is this suitable for saltwater?
Designed for freshwater planted aquariums.

How often should I replace the liquid?
About monthly, or sooner if colours fade or become contaminated.

The colour doesn’t change, why?
Check placement, ensure fresh solution, and verify that CO₂ injection and surface agitation are balanced.

Keep your CO₂ readings clear and consistent with the JBL ProAquaTest CO₂-pH Permanent Refill.