[MiamiAG]

In honor of Amano coming to the AGA Convention this year, here are a few samples of Nature Aquariums. These pictures are from a site in Japan called Agua Journal and are copyrighted by them. Please check them out.

 

[HeyPK]

In the last two pictures there is some kind of glass device attached to the right side of the aquarium. It looks like a small flask-like bulb with a neck that bends like an upside down U. The bulb has some kind of liquid in it, but the neck is full of air. I'm guessing---is it some kind of CO2 level indicator? Is there a dye in the bulb, such as brom thymol blue?

 

[fishfry]

I believe that is the ADA brand CO2 quick indicator, similiar to the other ones on the market like the eheim one. I believe they do use bromthymol blue, at least the liquid in my little bottle looks like it...

 

[HeyPK]

Now that I see how the thing works, I think I can make myself one from a big test tube and a small test tube.

 

[IUnknown]

These are sold in the US, can't find the link right now.