Hello, My pond is still new and working on the nitrogen cycle. The water was dark last week, but has cleared up quite a bit, though there remains a brown tint. My waterfall spill stone into the pond was coated with brown sludge (algae?) but that is now gone and it looks good. I have a similar sludge building up on the rocks and pebbles in the stream. Should I expect this to clear up as my pond chemistry matures? Thanks!