This product is absolute GARBAGE!! First of all, it doesn’t meet your turtles nutritional needs, then this turns the water green, so imagine the amount of dyes in it!! I didn’t even registered it was this thing, just noticed the turtles were still hungry after eating this, which didn’t happen with reptomin sticks, and I thought my filter gave up. I ordered a brand new filter for NO reason, when I took them out to clean the tank to install the new filter, I put some food out for them and noticed the water there was green from the food! You definitely get what you pay for, so do yourself and your turtles a favor and just get the reptomin!