Dymax Crystal CO2 Drop Checker Indicator


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IMPORTANT: Due to the hand-crafted nature of this item, small cosmetic imperfections may be present and do not imply damage or a defect of the product. Returns are subject to approval and must be new, unused and in original packaging. Damaged returns are subject to restocking fees.

Suitable for rimless and rimmed aquariums. 
Package does not include indicator solution - Click here! 
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The Dymax Crystal CO2 Drop Checker Indicator is built from high-quality glass and offers an easy way to monitor CO2 levels in a planted aquarium tank. When used with a pH reagent solution, the solution changes colors to indicate whether there is an excessive, optimal, or insufficient amount of CO2 being injected into the planted aquarium. Using a CO2 drop checker offers an extremely simple method for monitoring CO2 levels in the planted tank. It's a great help for those who are new to CO2 injection, a good reminder to refill your CO2 cylinder and fantastic for any aquarist that is keeping aquatic plants with specific requirements. Taking care to make sure levels are stable also ensures the health of aquatic plants and livelihood of fish and shrimp.

Below is a CO2 drop checker in a UNS 5N following maintenance - Notice the liquid is blue, indicating lower levels of CO2 present in the aquarium tank.

Dymax Crystal CO2 Indicator For Planted Aquariums

Size Specification

Size Dimensions
2 x 1"
2.5 x 1.2"
Shipping, Returns and Refunds
Live plants are shipped Monday - Friday for all west coast orders. For all remaining states, live plants will only be shipped Monday through Wednesday and Friday to ensure they arrive at your doorstep 100% healthy.

Rimless aquariums will be shipped throughout the week via UPS or Fedex Ground. For more information, please visit our FAQ page.

Hard goods can be returned up to 14 days after receipt of purchase. Buyer is responsible for return shipping.

Due to its nature, we are unable to accept returns for live plants. In the unlikely event you are unsatisfied in any way, please contact us ASAP. We provide 100% DOA (Dead On Arrival) protection.

To be eligible for a refund/store credit, please contact us within 12 hours of receiving it and provide a photo of the item in its original packaging.

No worries, we’ll take care of everything as long as it fits the guidelines above.

Most answers to general questions can be found on our FAQ page.
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