"Reel McKoi" wrote in message
...

"George" wrote in message
news:vsKme.20927$IC6.144@attbi_s72...

"Paul" wrote in message
news
Around 40-ppms........Thanks

That is a little low, but not dangerlously so. If it were me, I'd just
add
some limestone rocks to the pond and leave it at that. I have a
limestone
waterfall, and my general hardness stays right at 80 mg/L, which is
normal
for freshwater ponds.
=======================
And they're totally safe. They raise it slowly and gradually - no shock
to
the fish.
--

Exactly. And the limestone keeps the alkalinity from falling.