I echo the Joe's Juice with 100% raving review.
I had a bad infestation at one point, it was my first experience with the pest and I did not know what to do. I tried pulling them out, cutting them out and YIKE ... 1000 grew over night. I tried Peppermint shrimp and other natural cures all to no avail. Predators like the shrimp work well to keep them in check but not solve an outbreak.
Go get the Joe's Juice. It is EASY to use and just about guaranteed. I have seen it at Petco near Perimiter Mall or you can order it online.