Hi @Colu things progressed for the worse and all fish seem affected with various conditions. I’m not sure if I should switch up meds as I’ve only gotten one medicated feeding of Kanaplex.
All fish have clamped fins and I’ve seen two flashing against the glass and substrate. Two fish are hanging out vertically alongside the heater and seem to gasp at surface. The koi looks like some ich or white spots on his tail but the spots are not bright white or pronounced.
I have on hand Expel-P, ParaCleanse, Maracyn, Ich-X, KanaPlex and Metroplex. I’ve only used the kanaplex mixed with soaked pellets once.
No changes to the water params, they are same as above but I can do another water change prior to treating the water column if you think that’s next step.
pH 7.2
Nitrates 50
Hardness 300
Nitrite 0
Ammonia 0
KH/Buffer 120
Water Temperature 72F