The first thing I'd be doing is fishing them eels out. They'll wipe out the lot. Seen them take fish alot bigger than a kilo.
Then I'd be starting over. I cant see there being alot of fish left if there's slimeys in there.
If you want to be sure, a live shrimp suspended just off the bottom is the best bet.
For the eels a hunk of meat on the bottom will do the trick.
fitz..