My Koi pond is 6 weeks old and should have gone through a complete water cycle by now. My pond is 3400 gallons with a filter by Aqua it is an Ultima 11 Filter and I was told it would more than handle my 3400 gallons by turning over my complete water volume in an hour. My water test show good reading, however I can not achieve the water clarity necessary to enjoy my pond. I do not have a UV light and the more I research the more confused I become. Now trying Aqua-One pond clarifier. Please help!