Top critical review
One person found this helpful
I'm not sure that this does anything at all....
on January 15, 2016
This stuff is okay, but it lasts nowhere near as long as the packaging says. Before you know it, it is vanished. I'm not really sure that it does anything for larger turtles, anyway. I would recommend that you simply buy liquid water conditioner designed for turtles, change out the tank water more often, and/or buy a pump filter on Amazon designed for turtle tanks to avoid needing this at all. These simple vanish to quickly...especially if you have a larger turtle who swims around a lot, stirring up the water which will speed up the way that these dissolve.