with limestone there is no need to add much of anything else. your water is
hard enough altho never use copper in there.

those pH pills can kill the fish when dropped into very soft, very acidic
water. for some reason the pH swings up and down and doest stabilize.
stability is what you are after. Jo Ann has big honker koi in acidic water
treated only with organic dolomitic limestone. Ingrid


I have
reached 50 ppm, but seldom see 100 ppm in my pond