Aquatic CO2 Drop Checker Detachable Tear Drop Shape Without Solution,Upgraded Version

I like these more than the traditional drop checkers, they seem to react faster.

Easy to use exactly as described

work well as intended.

I've had several CO2 checkers over the years, with some being quite expensive when they all do the same thing. I wanted to give this little gadget a try. I love the shape and the size. I like the indicator to let you know what the CO2 levels are.The instructions were a little tricky, but I'm putting that on user error, not on the device. I noticed that some other people in the reviews expected solution. As did I, but then I went back and realized I bought the CO2 checker not the checker + solution combo. No worries, I have plenty at home, but be sure to double check which one you are picking if you need solution!I may just end up buying a couple more of these as backups.

I'm relatively new to adding CO2 to my aquariums, but I wanted to do it carefully.Originally, I had one of those standard glass ones -- it worked fine, but I got one of these to see if it would be better. I was finding the green ball that is used to compare to the color of the liquid to be very appealing since I needed a reference, being so new.Anyway, these are great! I ended up replacing the glass ones I have with 3 of these. Love them.

Doesn't really stick into the suction cup well. Seems like if you just breath on it aquarium water enters the reserved liquid chamber and you have to refill it. If i had to do it again I would pay a few dollars more for an inverted u designed one.

C02 gauge is easy to take apart and fill with solution. I did not have any problems with it sticking to the glass. My daughter's fish have bumped it and tilted it slightly but it has not came off the glass. I liked that it is not very big and the C02 gauge has the green dot to show the correct color. Went from blue to green so it seems to be working good. For the price seems to work great. Just be careful when ordering, one comes with solution, the other does not.

It works well for a few days, but aquarium water seeps in at the seam rendering it usless. If I was new at Co2 tanks, I would have gassed my livestock due to in accurate readings.Stick with glass one peice units. I tried this because I broke my glass one cleaning it. Wish I never wasted my money on this. Great concept, terrible real world execution.

Nothing really hard to. Figure out!

Funcional para medir cantidad de CO2. Peso el kit de cristal con solución y se siente de muy buena calidad.

El producto es de plástico pero se ve bien. El verdadero problema es que la soporte de succión incluida NO lo detiene. El drop checker se la pasa cayendose a pesar de que que el vidrio está limpio. No dura ni un solo día fijo en su posición. Me consta que es la soporte de succión porque en el mismo vidrio tengo el termometro con una base aún más pequeña.

Super easy to setup and install. They have upgraded the design for the "green ball" people reference loosing is no longer - it's permanently a part of the design now. The indicator works great. I have it on the opposite side from my diffuser. It does take about 1-2 hours to respond to CO² levels but that's standard. Made from acrylic and not glass so you can't break it.

Glad to have this in my 5th tank which I just set up as a med-flow plant sanctuary. Easy to use but the instructions need work. They say nothing of how many drops of either the solution or the tank water. You can look it up online easily but it is a slight nuisance that could be easily solved. Otherwise, looking forward to monitoring the new tank as it cycles.