#Biofloc

Описание: #BFT #Journal #S1:E1
*Stocking of Vietnami #Koi seed done on 24.8.19,
*7500 seeds per 10000 litre,
*2500 to 3000 lines seed,
*total body mass per tank 2.6 kg.

-Negligible mortality due to transportation in 1st day approx 50 out of 30000
-Mortality continued till date i.e 13th day since the seed introduction making it a loss of total 900 seeds
-PH under control-7.2 to 7.3
-TDS - 1700
Floc density 7mg/litre
-DO level-6 ppm
-NH3 varies from 1 to 2 and was reported 4 once(had to drain 20% water to control)
since the fishes are very small hence adding too much carbon source particularly molasses makes them uncomfortable. Few fishes were found floating vertically with head up.
-adjustments were made in quantity of jaggery addition to maintain DO level to keep it moderate.
DO level fell down to 1 by adding jaggery in larger amount in one go(since NH3 was 4ppm), so water was drained out and doseage were splitted in 3 times just as practised earlier.

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