I'm in the process of rebuilding my pond. After rebuild it will be about 10,000 galloons. I have tentatively selected the pump and filter. That is a 3/4HP Sequence Titan Pump (12,000 GPH) to an Ultima II 20,000 gal filter. The topology allows me to locate the pump below water line. The remaining issue is that I can't find a leaf basket or other pre-filter that is >= 10,000 galloon capacity with a 3" outlet to the Sequence pump. Any suggestions?