oxygenators make oxygen during the day, use the oxygen at night.. when pond water is
really warm it holds less oxygen and if there is an algae bloom it can use all the
oxygen up by morning the largest fish die first.
waterfalls rarely oxygenate well. it is falling and tumbling over rocks it might.
supplemental aeration is the best way to make sure there is enough oxygen.
Ingrid

"Jason Garner" wrote:
I was under the illusion that Oxygenators only made Oxygen and didn't
consume it and in the posts where people talk about gasping fish that was
because they didn't have Oxygenators in their ponds.

Even if the plants are using the oxygen at night I still have my waterfall
which runs 24hrs a day.


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