My system has been running for about 2 months now and over the last two weeks I have been losing tilapia and goldfish. I don't understand what is going wrong. Most of the dead tilapia shows signs by swimming without a sense of direction (i.e. swimming in spirals, running into objects, not moving or controlling position when still). Every now and then I go out and check the system several times and the tilapia were showing no signs; however the next visit will render one dead at the bottom. Pretty much all of the goldfish end up at the surface with little to no scales left. As with the tilapia most don't show any signs of a problem, if they do it would be lethargy and staying toward the bottom. Overall I am losing any where from 2-6 fish a day.Here are the numbers from today:
The fish are young and the system is large (250gal fish tank and 5 1/3 IBC tote beds). I feed them homemade food and duckweed. I have know idea what to do.
I'm guessing you live out in the estates as I do. I have had a similar problem with my goldfish. They were swimming around in a school near the top of the pond and then one day they were all at the bottom and the next day I started to find dead fish. This has continued for several days.
I have noticed that last week I got a big algae bloom in a pond I keep mosquito fish in and my big pond began to grow hair algae . Have you had any trouble in this regard?
I've also been wondering if the county is spraying for mosquitos again. I'm not sure that would effect the fish but they are small.
Where do you get the ingredients; what are the ratios; how is it being fed to them; is it pellets; do you know the level of protein and vitamins they get from the food?