OK, I've been running this for a week now. I love it! At first I set it up with 4dKH. Today I cleaned it out and made a 5 dKH so that I can bump up my CO2 up to around 40ppm for some algae issues (along with Excel).
Once it's in the tank and working, it really doesn't take more than a hour to start to see the color change.
When I first mix it up and install it, the solution is dark blue, and it takes a couple of hours to get down to a green or yellow color. After that, it seem to respond fairly quickly.
This is a great little gadget.
Brian |