does it dissolve pretty easily?
At first I would just dump it in the tank, but I noticed that sometimes it would clump together; as it would fall, the fish would try to eat it.
So what I do now is...
1. Fill a big plastic cup with water
2. Add Safe to the cup of water
3. Dump cup of water into another cup
4. Dump water from one cup to the other (back and forth) until the powder is fully dissolved.
5. Dump cup into tank.
None of the fish that have tried to eat the safe seem to have suffered any adverse affects, but I can't imagine it was good for them. When I add it to the tank, it has a very distinct pungent smell and I try to avoid inhaling any of it myself, but I'm sure I inhale a little (it's a very fine powder).
Just don't do this:

