The reason you have to look at it just before sunrise is that nothing is making
oxygen in the pond *until* the sun comes up. So if your fish are oxygen
deprived that may be the only time you will see it.

It happened in my frog bog when the frog bog had fish. I removed half the fish
right away and the problem was solved. Of course it helps to be an insominac,
have a DH whose alarm goes off at 4:45am and labradors
~who~must~get~outside~right~NOW!




k30a