“Working as they should. I didn課ｪt see this in the instructions but it課ｪs best to soak them for 24 hrs b4 use.”
“Good quality as always, but getting pricey”
“Does what it says on the tin”
“seems to do what it claims - if kept moving in a reactor, gets bacterial growth which removes nitrates”
“They do the job well and have saved my tank thank you”
