I use 3 of his products and have no complaints. I use them on my sps dominant 150 and on Emilys 20g zoa garden. I also use it on my buddy's tanks(re-fresh) and it cleared up his tank and got rid of cyano. I used it to clean up sludge and help with cyano, also to boost the good bacteria in the tank.
we just sold out of waste away. but should get more soon.