"Gorf" wrote in message
oups.com...
Thanks, Koi-lo, Gail & Ingrid.

I've passed on your responses and I'll let you know how he gets on.

To be honest, I thought the aeration was inadequate, but he's had the
fish since I've lived here (4 years) and they haven't changed much in
size. He's assured me it's OK, and their change is sudden, not steady.

I've made him go and buy a water testing kit, and I'll get him to look
for some of the possibilities mentioned.
================================
I'd be interested to know what happens with his fish. Have a Happy
Thanksgiving. :-)
--
Koi-Lo.... frugal ponding since 1995...
My Pond & Aquarium Pages:
http://bellsouthpwp.net/s/h/shastadaisy
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