Originally Posted by
candycane
http:///forum/post/2542979
PLEASE read the instructions on that stuff. Flatworm exit works extremely well, it kills mostly all of the flatworms. Problem is that when the flatworms die, they release toxins. Now if you have to many in there that you didnt get out, the toxins from the dying flatworms could wipe out your entire tank.
I finally gave in and used the stuff. I moved the tank a few months ago, so the flatworm populations were greatly diminished. No problems with the water quality - I siphoned a lot of dead ones off the sand, and put a huge bag of activated carbon in one of my sump compartments to catch the toxins. The fish seem fine, so does the cleaner shrimp and cucumber.
Unfortunately, some of the flatworms also seem OK! I put about 90 drops into a 72gal+15gal(sump), the recommended dosage was 70 drops. I also did my hospital tank, and the flatworms have already returned to that tank. I thought your comment was interesting ("kills mostly all the flatworms")- if this stuff doesn't eradicate the flatworms, what good is it?