Hey Jack congratulations on the pond! Quick question are you sue that you have DW? In the pictures it looks like FA. Be interested to know the depth of your pond. If it is FA or DW I would be interested to know if the tilapia could keep it under control as well. If your climate is like mine which I presume it is....I figure that we could keep tilapia alive for around four months if we had weather like this past year.