Hello,
First time posting but occasional lurker. I have a koi, about 10", that is circling at the surface (its right side down, left side up), and seems to be gasping for air. Maybe has some look scales but can't really tell for sure.
My 2,200 gallon pond water readings are Ammonia 0; Nitrite 0; Nitrate 0; PH 8.2; GH 3 to 4; KH 7; temp about 82*.
I use a bead filter and an auxiliary aerator in addition to the inflow spout (formal pond). The readings have been steady for a couple of months. I added 0.5 cups of PH yesterday and 0.5 cups Nite-Out today. I also added 1 cup baking soda yesterday. I do a partial water change every 3 days of about 100 gallons.
Yesterday, the fish (7 total, totaling maybe 65"-70" inches for all combined) started eating less and just a little today. Now today, on eof the larger ones is not looking great.
Any suggestions? Thanks, John