You say your params are OK. Is your ammonia zero? In warmer water, you'll
tend to have less oxygen. In a small amount like 250 gallons, you are more
suscetible to swings in chemistry, and the fish are more at risk. If you are
losing 2-3 per day...how many do you have in 250 gallons?

Are there any outside issues? Chemicals being sprayed, etc?

Are the plants OK?

Are any other critters dieing?

BV.



Yea, what he said. A ph of 8 is fine for a pond. I think
something else is most likely the problem.

--
Bonnie
NJ
http://home.earthlink.net/~maebe43/