The low P Optimal is a special run made for a large pond supply/consultation company. IIRC it's only slightly less P than the normal stuff. And the normal stuff IIRC is less P than Aquamax.
I am totally unsurprised regarding the special order by the pond supply/consultation company. But I am curious. If they only wanted slightly less P, why didn't they just use slightly less of the regular stuff? Just saying ...
It isn't what we don't know that gives us trouble, it's what we know that ain't so - Will Rogers
