Honestly, I find CaribSea Mineral Mud to be a better product. I've had more luck growing prolifera and mexicana and other macro's in the mineral mud. The kent biosediment just hasn't given me as much growth as I wanted....try it and let me know how it works for you...maybe I had a bad batch or something.
Thanks Jared, I have seen it before somewhere but do not remeber where. I will take a look around for that before I commit to the Kent product. I got to get something to root some macros in so I can get my Nitrates under control. I am getting tired of weekly 30 gallon changes and no results. My tank was great until I moved, and my algae crashed. Thanks again.