PH: 7.6
Nitrate (NO3) ppm (mg/L): 0
Nitrite (NO2) ppm (mg/L): 0.25
Ammonia ppm (mg/L): 0
Stress Zyme: 10 ml
Water Change: 3 gallon- 4 gallon
Number of Fish Removed: 3
I changed water today, 3gallon-4gallon, added stress zyme, found three distilled water bottles and filled them with water to begin the distilling process. They should be ready for Wednesday/Thursday this week. Removed 2 dead fish today. Six fish look weak, cleaned the pump, water tested and everything is the same as before, nitrite is still high. My teacher was back today and he e-mailed the fishery to see if our death rate is higher than it should be. Come to find out that a lot of people involved in the program have had a high death rate this year. It seems that EMS (Early Mortality Syndrome) has played a big role in this die off rate. Early Mortality Syndrome is a sickness caused by a deficiency in vitamin B12 (thiamine). When an adult fish is deficient in thiamine, they will pass this deficiency on to the offspring and the offspring can actually die from the deficiency if they don't acquire the thiamine that their growing bodies need. The weak fish that I have been raising have actually shown a lot of the symptoms of EMS. These symptoms include spinning and lying on their side on the bottom of the tank during the first few weeks of the swim-up period (when the fish first begin to swim a lot and are transitioning to solid foods). When the fries begin to eat solid food they should acquire the thiamine that they need and should no longer have a problem from it but since some of the fish never really began eating they weren't able to acquire the thymine they needed, so they passed away. Typically less than 20% of the fish should suffer from mortality due to this deficiency.
Fish were fed at 10:0am, 3:30pm, and 5:30pm today, I also took a few pictures.
