Garden Sprite Watches the Pond

Today I installed a UV filter at the small pond. The water has become murky with a dark green tint. When this happened in the large pond, the UV filter cleared it up in about 3 days. The picture is of our Garden Sprite who watches over the pond. She is circled by beautiful Vinka flowers. We planted several varieties of Vinka a couple of years ago and this year is their best bloom yet.