Review on Optimize CO2 Monitoring: JARDLI Glass Drop Checker for Planted Aquarium Tanks by Brooke Gill

I find it difficult to complete most of the bricks. It was so easy. I held the dropper at an angle, almost sideways, then opened the solution bottle and inserted a plastic dropper to fill the dropper halfway with solution for the first time. The second time I just tilted the pipette, uncapped the 60mL solution bottle and filled it halfway. It's faster and even easier. It's well made and strong. You don't have to worry about glass tubes breaking and cutting your hands. It's very easy to see the color. Many drip checkers come with a small, weak suction cup that sticks to the glass for about a week, then you have to buy another to use the drip checker at all. The set contains 2 well-made, very strong suction cups. I loved this $10.49 JARDLI Drop Checker so much I ordered a second one and received it today. I just put it in my 45G High Light Tank. It may be well hidden behind the plants, but I think it's so pretty that I place it in a prominent spot so I can see the color of the solution and know how my CO2 is doing. I am very satisfied with this wonderful product.