This morning I did a WC on my 3 tanks and all seemed normal and fine then I ran some errands and had 7 dead red minors. Didn't think much of it at first since once every 18-24 months this happens but only in this tank and only with teras, never cories or cichlids or any other genus. Tank is also never the first tank cleaned so it's not something to do with water sitting in the plumbing. Anyways I run more errands get more fish and noticed they're near the surface. I look at the regulator and the working pressure shot from 35-80psi, tank pressure is a bit over 800psi. Any ideas as to what would cause this to skyrocket?
