Today, I fed the pond fish as usual this morning. They all seemed happy. Late this afternoon I glanced outside and noticed the pond had froth on the top and the level was very high. I figured the pump inlet screen was plugged again. I went out and found the level control device (Hudson Valve) had failed and water had been pouring into the pond for who knows how long. I also noticed all the fish were huddled up in one corner of the pond. That seemed unusual. I turned off the water and took removed the valve. It had literally fallen apart. I installed it originally in July of 2016 so it lasted 2-1/2 to 3 seasons. I ordered an new one and it should arrive on Tuesday.
Unfortunately, I also notice that my largest koi lay dead on the bottom of the pond. I don't know if the utility water had done him in or not. There may be others on the bottom, but with the foamy water, I could not see any. This one was so large (12" nose to fin), he really stood out on the bottom. Just to be play it safe, I put some detox in the pond to try to counteract the chemicals in the utility water. I was in the habit of doing this every month, but kind of fell behind this season.
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