Dymax Co2 Indicator

Dymax Co2 Indicator

Dymax Co2 Indicator is a CO2 drop checker for planted aquariums, used to monitor CO2 and pH levels so you can look after the health of your plants and fish. It suits aquarists running CO2 who want a simple visual check on their levels.

Key Benefits

• Lets you keep an eye on CO2 and pH levels in your planted tank, so you never have to guess.
• Helps protect your plants and fish by showing when CO2 is too low or too high.
• Extremely simple to operate: fill, attach and read.
• Colour-based reading is easy to interpret at a glance.
• Comes with a high quality drop checker and a suction cup for easy mounting in the tank.

How to Use

• Fill the drop checker half way with CO2 Indicator Solution.
• Fit the suction cup to the drop checker.
• Place the drop checker in your planted tank.
• Wait 2 hours before reading your CO2 level.

Reading the Colour

• Deep blue: this is the colour when your CO2 is off. If it stays blue once CO2 is running, your CO2 is too low.
• Green to light green: the optimal CO2 concentration of 30ppm.
• Yellow: your CO2 level is too high and may harm your fish.

After the CO2 has been on for around 2 hours, you should notice the colour begin to change.

Suitable For

• Planted aquariums that use CO2.
• Aquarists who want to monitor CO2 and pH levels to support healthy plants and fish.

What's Included

• High quality drop checker
• Suction cup

Please note that CO2 Indicator Solution is required to use the drop checker and is sold separately.

Frequently Asked Questions

How long must I wait before reading the drop checker?
Wait about 2 hours after the CO2 has been switched on. That is when the colour change becomes noticeable.

What colour means my CO2 level is correct?
A green to light green colour indicates the optimal concentration of 30ppm.

What does it mean if the solution stays blue?
Deep blue is the colour when CO2 is off. If it remains blue once your CO2 has been running, your CO2 level is too low.

What should I do if the drop checker turns yellow?
Yellow means your CO2 level is too high and may harm your fish. It is a sign that your CO2 needs attention.

Is the CO2 Indicator Solution included?
No. The drop checker and suction cup are included, but the CO2 Indicator Solution is sold separately and is needed to take a reading.

How full should I fill the drop checker?
Fill it half way with CO2 Indicator Solution, then attach the suction cup and place it in your planted tank.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

Enjoy the convenience of collection points and lockers! 📦

No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.