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  • Rhinox Co2 Indicator Solution (2 pcs) - Glass Drop Checker Replacement Solution for Aquarium - 3 Drops Tell Precise CO2 Level in Planted Aquarium - Easy to use Regent - Keep Plants and Fish Healthy

    All aquarium experts know that the art of keeping a thriving tank requires a lot of balance and attention to details. One of the small but crucial details is making sure that the carbon dioxide level in the tank is balanced perfectly to make it comfortable for both plants and fish. The best way to do this is to test the CO2 levels with a drop checker solution. Most avid aquarium keepers like yourself would already have the right tools and solutions that can measure CO2 levels. But did you know that it is important to make sure your CO2 indicator solution is changed regularly? Just like you would change the aquarium water each week, you should also make sure your indicator solution is fresh to ensure an accurate reading every time. Improper storage can cause the solution to change colour and produce a wrong reading. This is why our 10ml bottles are the best option. This ready-to-use value-for-money pack contains 2 indicator solutions of 10 ml each. Once opened, one bottle is perfect to use for 3 months (the recommended time to keep your CO2 indicator solution before throwing it out). It is recommended that you purchase only 1 pack (2 bottles) and set an alarm for after 5 months to order in your next bottle set. Our solution works best with our Drop Checker Kit which you can buy s...

    • ASIN: B072MJBNLX
    • Brand: Rhinox
    • ASIN: B072MJBNLX
    • UPC: 791043306364
    • Part No: 43349-582

  • Fluval CO2 Indicator Kit

    Fluval CO2 Indicator Kit is used to monitor approximate CO2 levels and also helps gauge CO2 levels in aquariums. The kit includes a 0.34 fluid ounces CO2 Indicator Liquid, CO2 Indicator, and a color check sticker to help gauge CO2 levels.

    • ASIN: B0052M9886
    • Brand: Fluval
    • ASIN: B0052M9886
    • UPC: 015561175517
    • Part No: A7551

  • U.P. Aqua Co2 Indicator Refill

    Co2 Indicator Solution Refil

    • ASIN: B005VS1H8A
    • Brand: U.P. Aqua
    • ASIN: B005VS1H8A
    • Part No: D-515-A

  • Glosso Factory CO2 Drop Checker Kit with Indicator Solution for Planted Aquariums (V2 Single Kit with 4.2dKH Solution)

    - Easier to read: Other Drop checker kits may be hard to read. This is why we include the optional darkening agent, which you can add to the premixed indicator solution to make reading easier in high light tanks or tanks with dark backgrounds. - Easier to use: Comes with pre-mixed indicator solution, pipette, and suction cup. Fill the glass chamber and place in tank. Wait about 30 minutes for the color to fully change. - Do Not add tank water into the drop checker chamber. - Pre-Mixed 4.2 dkh solution included, (Green at 30ppm dissolved CO2) By keeping the drop checker solution near green at all times, aquarists can ensure optimal plant growth while keeping fish and livestock safe. The kit works by changing color as CO2 levels rise and fall. Too much dissolved CO2 can be harmful for fish and livestock. With this kit aquarists can accurately measure optimal CO2 levels that promote plant growth while helping to keep fish safe. - Included in 4.2dKH (Single V2) Kit: - 1x Glass drop checker - 1x Suction cup - 1x 1 oz. Pre-mixed indicator solution 4.2dkh - 1x Flexible pipette - 1x Optional darkening agent - 1x Instructions

    • ASIN: B077CCMTXK
    • Brand: Glosso Factory
    • ASIN: B077CCMTXK
    • UPC: 757347553064
    • Part No: DC4.2KIT

  • Yooha 15ml CO2 Indicator Refill, Fish Tank Aquarium Planted CO2 Living Condition Indicator Solution Liquid Test

    Features:Made of high quality of materials.Use with CO2 indicator.Easy to use and convenient to detect concentration of CO2.Suitable for all kinds of fish tank.A wonderful solution for feeding fish and observing their living condition.Different color of liquid represents different concentration of CO2.BLUE means that CO2's concentration is too low.GREEN means it is normal.YELLOW means that CO2's concentration is too high so that it is harm to fish. Specification:Type: LiquidColor: As picturesHeight: 7.7cmNet Weight: 15mlQuantity: 1 Pc Package includes:1 x CO2 indicator SolutionNotes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.

    • ASIN: B07QC19DJJ
    • Color: as pictures
    • Brand: Yooha
    • ASIN: B07QC19DJJ
    • UPC: 697178106308
    • Part No: 15542952350433

  • Shoresu Aquarium Carbon Dioxide CO2 Indicator Sucker Long Term Check Plant Monitor Test

    100% brand new and high quality Features: High quality of materials. Easy to use and convenient to detect concentration of CO2. Suitable for all kinds of fish tank. Different color of liquid represents different concentration of CO2. BLUE means that CO2's concentration is too low. GREEN means it is normal. YELLOW means that CO2's concentration is too high so that it is harm to fish. A wonderful indicator for feeding fish and observing their living condition. Clear to know and useful. 1 pc of indicator only,other accessories demo in the picture are not included! Specification: Item Type: D-515 Type: CO2 Indicator Color: As pictures shown Size: One Size Liquid Height: 6.5cm(2.56in) Indicator: 3.8x2.5cm(1.50x0.98in) Sucker: 3x1.5cm(1.18x0.59in) Quantity: 1 Pc Note:1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x CO2 indicator

    • ASIN: B07CRC8R51
    • Brand: Shoresu
    • ASIN: B07CRC8R51
    • UPC: 714973114908
    • Part No: 2SS200293_TFE

  • Yosoo DIY Aquarium Planted Tank CO2 System kit pro Tube Valve Guage Bottle Cap D201

    CO2 system is designed for low cost planted tank use. Package included: 1 x needle valve 1 x pressure gauge 2 x bottle caps CO2 tubing

    • ASIN: B00UYMO6SQ
    • Brand: Yosoo
    • ASIN: B00UYMO6SQ
    • UPC: 711274514796
    • Part No: 43349-7903

  • CO2 Indicator "7" type - Drop Checker LONG TERM MONITOR test Real time kits

    Special features: l Allow you to monitor the CO2 level in your tank from any angle. l With smart design to prevent any chance of spill of the indicator solution. l Reusable color chart sticker provides convenience in location change of the sticker. l Use it will assure your good start of successful plant aquarium. How to use: l Take apart the CO2 Indicator. l Add 5 drops of CO2 indicator solution on test vial. l Refill 1.5cc aquarium water to the test vial. l Put CO2 LONG-TERM monitor inside the aquarium, approximately 10 cm below the water surface. l Stick the color chart on the glass wall of the tank ( the position to cover the suction cup ) to read the CO2 level in your tank. l Change solution every 2 - 4 weeks. Solution change at water change is NOT necessary.

    • ASIN: B074267WFS
    • Brand: buy it now
    • ASIN: B074267WFS

  • accessgood Aquatic CO2 Glass Drop Checker PH MONITOR Fish Tank Test KIT

    instrustions: first, you have to turn the drop checker upside down, add 4 drops of solution and I added enough tank water to fill the bubble half way. once you turn the drop checker right side up you can place it in your aquarium. you do not have to lower the water in your tank. it takes a couple of hours to start working. once you changed tank's water, pls change the liquid.

    • ASIN: B00OO2FUFK
    • Brand: accessgood
    • ASIN: B00OO2FUFK
    • UPC: 601994723816
    • Part No: 1

  • CO2 Indicator "U" type - Drop Checker LONG TERM MONITOR test Real time kits

    Special features: l Allow you to monitor the CO2 level in your tank from any angle. l With smart design to prevent any chance of spill of the indicator solution. l Reusable color chart sticker provides convenience in location change of the sticker. l Use it will assure your good start of successful plant aquarium. How to use: l Take apart the CO2 Indicator. l Add 5 drops of CO2 indicator solution on test vial. l Refill 1.5cc aquarium water to the test vial. l Put CO2 LONG-TERM monitor inside the aquarium, approximately 10 cm below the water surface. l Stick the color chart on the glass wall of the tank ( the position to cover the suction cup ) to read the CO2 level in your tank. l Change solution every 2 - 4 weeks. Solution change at water change is NOT necessary.

    • ASIN: B07428HWS2
    • Brand: buy it now
    • ASIN: B07428HWS2

  • S. T. International Aquarium CO2 Level Indicator Reagent

    • ASIN:
    • Model: STR-CO2MONITOR-D515A-UP
    • Color: Multicolor
    • Size: 2.5 x 1 x 1 in.