Flame, Ewest knows a considerable amount about cover and has the photos to prove it. There's also a note in the link below from Bob Lusk specifically talking about tannins from green wood causing the water to turn black. Very informative. smile

http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=6629#Post6629


If people concentrated on the really important things in life, there'd be a shortage of fishing poles.
- Doug Larson