Pond filtration kits take the guess work out of matching the right pump with the correct filter together to fit your pond. If you also want a UV clarifier
Great Blue Herons are typically solitary birds, so placing a lifelike heron decoy at eh edge of your pond often deters them from visiting your pond and eating your fish. If you have a heron that lives near your pond, moving your decoy around from time helps to maintain illusion.
