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Description
Senzeal 2Pcs CO2 Drop Checker Glass Aquarium Monitor CO2 Indicator for Planted Fish TankAbout This CO2 drop checker made of high quality glass, use to measure CO2 levels at a glance Indicator color chance shows results: The CO2 indicator (not include) color is blue, when it is blue represented CO2 insufficient; Turns green, the balance of CO2; Turns yellow, means your tank has too much CO2. Make the necessary adjustments and test until you get green. Monitoring CO2 levels in your planted aquarium is very important for the health of your
About This
- CO2 drop checker made of high quality glass, use to measure CO2 levels at a glance
- Indicator color chance shows results: The CO2 indicator (not include) color is blue, when it is blue represented CO2 insufficient; Turns green, the balance of CO2; Turns yellow, means your tank has too much CO2. Make the necessary adjustments and test until you get green.
- Monitoring CO2 levels in your planted aquarium is very important for the health of your plants and fish. Can keep the CO2 levels in your tank consistently by checking it regularly
- Easy to install and use: Make sure your test kit is clean. Drop 5 drops of CO2 indicator(not include) into the glass checker and use straw to fill the tank water with the test solution area to 1/2. Then turn the opening facing of drop checker down. Use a sucker to attach it to the side of your tank and wait for up to 2 hours
- Apply to: fish tank, aquarium, especially aquatic plants, tropical fish to watch and cultivate for fish tank. Monitor to be installed below the water surface about 10cm, it is recommended not to install too far from the refiner. (Note: Glass products are fragile, please be careful when opening the package and using the product to avoid injury.)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Total Glow in the dark entertainment
Color: Glow in the dark - L
This toy is my Aussie Shepherd’s favorite. It is durable. I love that in addition to playing fetch, the tabs make it possible for my dog to swing it from his own mouth and throw it in the air. The glow-in-the-dark feature is amazing! I throw the ball in the pitch black yard and watch it run back at me as my dog comes towards me. It's fun to watch!
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Reviewed in the United States on April 26, 2026
★★★★★ 3
Straps don’t last
Color: Glow in the dark - L, Color: Glow in the dark - L
My boyfriend’s dog chewed off all the straps in the first day. Decent ball, but why have straps that dogs can chew off so fast.
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Reviewed in the United States on January 5, 2026
★★★★★ 4
Fine choice for smaller dogs
Color: Green-M
A good choice for smaller dogs. My mini poodle enjoys flipping this around and playing tug of war with her humans. She cannot be left with it for any unsupervised play, because she was able to begin shredding one of the straps in a matter of a few minutes. The included pump works great.
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Reviewed in the United States on January 2, 2026
★★★★★ 5
Toeless wonders. Love em!
Color: Classic Color
Not gonna lie. These are a God sent when you have an issue with your toes. I hate my toes feeling constricted so these are phenomenal! Comfortable and well worth the money. I also like my socks thin. If you wear boots or hightops, these might not be what your looking for. I do adore the different shades and you can wear them one way or the other as one side is longer. If worn one way, they are higher up the ankle and vice versa.
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Sheet protectors
Color: Retro Color
Love these at night when I put lotion or Vaseline on my heels to protect my sheets from oil stains. Would
Buy again.
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Reviewed in the United States on May 31, 2026