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On Orders £20+. Next Day on Orders £80+
Same Day Dispatch
Weekday Orders Placed Before 3pm
Lifetime Support
With Extended Warranties

Drop Checker Instructions

Inject solution into the drop checker
Insert the dropper bottle into the drop checker and inject checker solution into the bulb until it's 2/3 full.
Blue colour co2 drop checker
Position the drop checker within the aquarium where CO2 bubbles from the diffuser are least likely to enter the device.

Leave the drop checker in the aquarium for 6 hours for it to equilibrate with the aquarium water.

If the colour remains blue you can slowly increase the CO2 dose.
Yellow co2 drop checker
If the colour of the solution turns yellow it indicates excessive CO2 in the water and dosing should be reduced.
Green co2 drop checker
Once the drop checker turns a light green colour you have the desired level of CO2 dosing.
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