In my saltwater aquarium around 8:20 pm with the Canon 20D and the EF 75-300mm f4-5.6 III USM. 130mm, f/8.0, 1/25sec.ISO 800. Used a 500D close up filter on the end on the lens. Shot in RAW and converted to tif image. Small color correction and color temp/tint, in RAW shooter software. In Photoshop did a magic wand on 2 spots (stuff in the water)then I just cropped and saved.