Flatworm eXit itself is quite safe to fish and invertebrates.
However, the body juice of flatworms can be toxic to some
reef inhabitants when present in a too high concentration.
body juice is sometimes excreted when flatworms die. 1 bottle
of Flatworm eXit treats up to 300 gallons.
When you use Flatworm eXit it is important to
do the following first.
1) Siphon out as many flatworms as possible.
2) Keep sufficient fresh activated carbon in a canister or filter ready.
3) Turn off UV, ozone and remove activated carbon.
Keep the skimmer turned on.