Aquarium CO2 Acrylic Drop Checker CO2 Indicator (Tear Drop & 15ml)

The product is not only very accurate, you can even see the color change without aquarium light. And it’s so easy to clean. The best part is the green dot on the top, even for people like me with no sense of color, it’s easy to see and read if CO2 in tank is appropriate.

Tengo que esperar que la solución haga efecto y cambie de color. Cuando lo haga y compare con mi test de ph actualizaré la reseña.Actualización: El primer día tarda en verse reflejado el cambio del color del líquido. Pero ya quedo funcionando correctamente.

Good for nano tank

Kinda bummed I didn’t notice…without solution. So I have to order the solution.

Exactly as described. First one came in broken, was quickly replaced.

You have to buy, or DIY make, the solution separately

I didn’t realize until after buying that this product is so dangerous is has special disposal methods required to not pollute the waterways. Yet at the same time the product is faulty in that it leaks. In just a few hours after having it attached to the tank the seal failed and all of the chemicals ended up in my tank causing several of my fish to die. Several others are still ill but hopefully the medical treatment I’m providing will save the rest. Do not buy unless you want to take those risks. I need a co2 monitor in there but the next one is going to be one that hangs over the edge so it won’t poison the tank. Regret purchasing this defective and dangerous product.

After having a few glass tear drop and finding them hard to clean and completely replace the solution, i went with this one. It is very simple to use, just twist it, and it splits in 1/2 for easy cleaning prior to reuse.