Seems safe from what info i can find on it, just want to make sure before i try it. Anyone use it to treat anchor worms on their "dither" fish in a ray tank... I pulled out one culprit and removed a worm with tweezers. Just want to esure they dont come back. Any info or personal experience with the use of Dimilin with rays is much appreciated. Thanks! Wasent all that easy to aquire, seems to be a remedy of the past with a few exceptions of watered down name brand versions.