What I've noticed with my fish is they are going for the larvae/bugs/worms that
seem to develop around and on the rocks of the waterfall. When I pull string
algae off the rocks the rocks are covered with little worms and the fish go
crazy.

Karen
Zone 5
Ashland, OH
http://hometown.aol.com/kmam1/MyPond/MyPond.html
My Art Studio at
http://members.aol.com/kmmstudios/K....M.Studios.html
for email remove the extra extention