common goldfish sick

hi, having recently moved my goldfish to a pond, I have noticed them looking
a bit peaky. One has developed what look like bloodvessels on his gill
scale, has lost a couple of scales near his tail and a few other places and
has some blood streaking in his tail(tho not all the way to the end of it)
the other two seem okay, but have a few scales missing. I have tested the
water and the results are 0 for ammonia and nitrates, and 8 for ph.

I`ve noticed the PH bounces from a ph of 7 in the morning to a as high as 9
of an evening. I know this is caused by plants/algae, could this be
affecting them negatively? the only other thing i can think of is some sort
of poisoning but everything was thouroughly cleaned before i put them in
there. any ideas?

--

"Kodiak" <nospam DeleteThis @nospam.com> wrote in message
news:dA5Fc.13126$t55.723123@wagner.videotron.net...
> Does every pond eventually need a water change?
> How often and how much water for a 350gallon with
> a bucket filter, plants, and 10 2inch goldfish?
<snip>

Save yourself some time and install an auto-water changer. In France they
call it a leak. I have one and it works great.

BV.