breeders of fish make green water for their fry. green water is actually healthier
than gin clear water when a pond is first filled. fish can go for a month without
food, but in green water they got a lot to eat.
you have a 250 gallon pond with how many fish?
what is on the bottom of this pond? it sounds like there might have been some
anaerobic fermentation going on and a release of hydrogen sulfide.
what is the temperature of your water? all those plants and algae are making oxygen
during the day, but using it up at night. it doesnt sound like you have supplemental
oxygenation in the pond. this could result in the death of the largest fish from
lack of oxygen. no, not possible to have too much oxygen
INgrid



"Jason Garner" wrote:
Do you think that because the water is Green they can't see the food and are
starving to death?
The other day I noticed a huge underwater disturbance and stared at it for
ages trying to work out what was causing it -its hundreds of air bubbles
they seem to be causing a swell of some kind under the surface.When I first
put my fish in, everytime I went near them they hid under the pump and they
looked all squashed and uncomfortable so after speaking to the guy at the
pond shop he got about 20 oxygenators tied then together and when I got home
I weighted them with a rock and put them in the centre of the pond for them
to hid in -they loved it as soon it as soon as they saw it.
Now of course it has grown and seems to be creating lots of oxygen -is it
possible to have too much O2 in a pond?

My pond is 1000 litres and has a waterfall at one end, 6 small clumps of
oxygenators scattered around the sides and on shelves, the huge clump in the
middle, a large waterlilly with about 12 pads at the opposite end from the
waterfall, 7 marginals on the shelves and 6 floating plants which are
multiplying faster than rabbits.

The dead fish looked in perfect condition by the way -no signs of sickness
maybe the Green water has worried it to death because it could not see the
sun anymore?


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