Good
 

Good to hear people are using it with good results and no ill effects. Seems to be working perfectly fine still in my reactor hasn't changed colours or anything, so I'll defiantly be buying it again. Rowaphos defiantly is good as well, I've used it as well as phosguard, both were fine. But like I said before I can buy 3 huge jars of phosguard for the price of one jar of rowaphos.