I do aerate full-time, but I am already wondering if there are DO issues. My other post: http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=228323#Post228323

For whatever it's worth, this is the first spring that I haven't added any dye. There is no inlet or outlet to my pond, and I still had a strong blue tint from last year's application.

Satellite Photo from May shows my pond as bright light blue. My neighbor to the east is shown in black, and the larger natural body to the west is also dark.