good point.
alot like my flatworm kill off, the tank did get back to normal fairly quickly tanks to the water changes, and the acro's responded well.
what i want to know is how much of the zeo system is good husbandry (regular water changes, constant water parameters etc) and how much it the zeo system??
it will be a while untill i can attempt it as i have along way to go in perfecting my water param's and keeping it all stable