I’m sure I have, because I pretty much bring it up to everybody. Before I started using rowaphos, I had been trying out some other phosphate sponge media to try to reduce the amount of algae in my aquarium, but those adventures weren’t going so well. I had basically tried everything but rowaphos, so I wish that would have tried that stuff first instead. What deterred me from using it? The price. That was a stupid reason now that I look back upon my struggles, because if I would have just bought rowaphos to start with I wouldn’t have spent all the money that did on all that other crap. Oh well, you can’t win them all I guess! Now that I’ve been using this stuff for several months, the nuisance algae in my aquarium is pretty much all but gone, it actually is much better than I ever thought I would be able to achieve, so I’m quite happy with myself.