turf algae scrubbers are nothing new. They have been around for many many years. A time back I read an article about a public aquarium of good size that this was there only filter, but I am pretty sure that was back in the 70's or 80's. I thought about it but reasoned that if it was so great why arent more using this meathod. Heck of alot cheaper and more natural. I guess that was naive of me to think that. You know that companies push their producs wether they are better or worse than the already obvious solutions eg ethonol in the gas. Maybe i will add this to my diy projects.