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Home > CO2 Monitoring > Drop Checker Complete Kits > Complete CO2 Drop Checker Kit

Complete Drop Checker Kit For Planted Aquariums

£11.99
Complete CO2 Drop Checker Kit
 

Key Facts

  • Regular size glass drop checker and suction cup.
  • Regular size: 5.5cm height, 6cm width.
  • Pre-mixed drop checker solution using 4dKH water.
  • Accurately monitor CO2 levels in your aquarium.
  • Changes colour to reflect CO2 levels.
  • Removes guesswork of how much CO2 is required.
  • Easy to use and install.
 

Description

A drop checker is an essential part of dosing CO2 in your aquarium. Without one, you would be guessing at how much CO2 you should be dosing for your aquarium. A drop checker removes the guesswork.

The solution in the drop checker changes colour to indicate the level of CO2 in your aquarium water; blue indicates a lack of CO2, yellow indicates too much CO2, and green indicates the desired level of CO2. Depending on the colour of the drop checker you can adjust your CO2 dose until the desired level of CO2 is reached.

The drop checker should be used in conjunction with a bubble counter so that fine adjustments to CO2 dosing can be achieved. Always make small changes to CO2 dosing, particularly if increasing the dose.

The kit includes pre-mixed drop checker solution, which is added directly to the drop checker. The solution comes in a 15ml dropper bottle for ease of use. The solution will last 6 months if changed on a monthly basis.

Instructions

  • Turn drop checker up-side-down so that the curved bend is at the bottom.
  • Add 5 drops of drop checker solution.
  • Slowly rotate the drop checker so that the solution enters the bulb.
  • Repeat the above steps until the bulb is 2/3 full of the solution.
  • Attach the suction cup to the drop checker.
  • Press the drop checker inside the tank 3 inches below water level, ensuring you have air trapped inside the main body of the drop checker.
  • Try to position in area of aquarium where CO2 bubbles from the diffuser will not enter the drop checker and give inaccurate readings.
  • Wait at least 6 hours for colour to accurately reflect the CO2 levels in the aquarium.
  • Adjust CO2 dosing in accordance to drop checker colour:
  • If the colour of the solution is yellow it indicates too much CO2 is present - reduce your CO2 dosing.
  • If the colour of the solution is blue increase CO2 dose in small increments.
  • If the colour is a light green you have the correct CO2 dosing.
  • Leave drop checker in aquarium for constant CO2 monitoring.
  • Change drop checker solution at least once every 4 weeks.
  • Click here to read the full CO2 Drop Checker setup guide
 

Customer Reviews

Average Rating

Individual Reviews

Monthawat T. Verified Buyer 14th Mar 2024
Item worked perfectly. Indicate CO2 level fine. Item worked perfectly. Indicate CO2 level fine.
Simon C. Verified Buyer 12th Mar 2024
Recieved quickly but the glass item was broken. Looks like the parcel took a bump in the post. Recieved quickly but the glass item was broken. Looks like the parcel took a bump in the post.


Small logo for CO2 Supermarket
Reply from CO2 Supermarket
We are sorry to hear the drop checker was broken while in transit to you, Simon. We've arranged for a replacement to be sent out to you. Please accept our appologies for any inconvenience caused.

Jessica W. Verified Buyer 15th Feb 2024
Generally a decent quality drop checker. Only issue was the suction cup. Was absolutely useless. Luckily I had others Generally a decent quality drop checker. Only issue was the suction cup. Was absolutely useless. Luckily I had others
Christopher D. Verified Buyer 31st Jan 2024
I'll be honest I didn't know what this was when it came in the CO2 system but I have found it a very easy and useful way of getting the CO2 level right. I'll be honest I didn't know what this was when it came in the CO2 system but I have found it a very easy and useful way of getting the CO2 level right.
S Y. Verified Buyer 13th Jan 2024
Seems to be robust and has definite colour changes. Seems to be robust and has definite colour changes.
James P. Verified Buyer 7th Dec 2023
great product. only slightly annoying bit is the ugly sucker which should be much more transparent. great product. only slightly annoying bit is the ugly sucker which should be much more transparent.
Roji S. Verified Buyer 16th Nov 2023
This came with the co2 system I purchased and it really is a very handy gizmo for getting the co2 levels correct This came with the co2 system I purchased and it really is a very handy gizmo for getting the co2 levels correct
Marcin . Verified Buyer 4th Nov 2023
Fast shipping, well packaged. Definitely will shop here again. Seller was in contact sending useful tips on how to install drop checker. Many businesses should learn from you guys. Thank you Fast shipping, well packaged. Definitely will shop here again. Seller was in contact sending useful tips on how to install drop checker. Many businesses should learn from you guys. Thank you
Patrick G. Verified Buyer 31st Oct 2023
It arrived quickly but unfortunately the glass piece was broken upon receipt. It was probably broken in the post as the box was a bit bashed up. To CO2 Supermarkets credit they sent a replacement very quickly and it seems to work well. Shame about the breakage otherwise I'd have been happy to give 5/5 It arrived quickly but unfortunately the glass piece was broken upon receipt. It was probably broken in the post as the box was a bit bashed up. To CO2 Supermarkets credit they sent a replacement very quickly and it seems to work well. Shame about the breakage otherwise I'd have been happy to give 5/5
Andrew C. Verified Buyer 10th Oct 2023
I had no idea what this was when it came with my co2 system but after reading the instructions and using it I've found it incredibly useful. A great way to get the CO2 levels right I had no idea what this was when it came with my co2 system but after reading the instructions and using it I've found it incredibly useful. A great way to get the CO2 levels right
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