Kelly wrote:


============================
This is an excellent idea if they have the space. These pools are only
$10
and last for a at least a year. That would give them time to dig their
larger pond and get a good size bunch of plants going. The scratching
would have me concerned. Since losing almost every koi I had to ulcer
disease a few years back, I'm a bit paranoid about parasites now.....


The problem I have is nitrite.... not nitrate as Hal said.

That's odd - but serious. Nitrite is usually a very transient product of
ammonia breakdown. In an established pond, it generally gets converted to
nitrate as fast as it's created. Assuming this is a caused by recent
spawning activity, the only thing you can really do is water changes & add
salt to limit the harm done by the nitrite.
--
derek