Hi every one my name is Luu .I did build Koi pond ,now is time to chose an external pump .Out there some brand make pumps but i really do not know which one is good that meant running smooth quiet /good performance and reliable and efficiency because it running 24/7 .I did research online and I am interesting on Reeflo hybrid hammer head/barracuda gold pump, Elite 800 platinum pump and Sequence 1000 .Do some one know please help me some idea about external pump Thank you very much