taylorodw
Aquarium Advice FINatic
I'll definitely go with the 60%+. That math definitely makes sense considering draining a recently-filled tank is basically draining a portion of the recently-added "clean water" right back out, even if it is mixed with the nasties.
Exactly. DK is right, any water change is a good water change But with levels as high as yours, you should maximize your effectiveness IMO.