Salmonoids are especially demanding about water quality and high oxygen content. The oxygen concentration should be kept at least 5 mg/l throughout the year. This ensures good condition of fish and facilitates quick maturity without disturbances.
Sufficient oxygen content near the basin bottom (2 mg/l) prevents leaching of nutrients and in particular phosphor into the water. Dissolved nutrients have a detrimental impact on water quality and – at worst – can cause growth of cyanobacteriu...
Crayfish is a very demanding species when it comes to the quality of water. One of the most important facts is the sufficient content of oxygen concentration in water. Actually the crayfish is just as demanding as salmonoids about oxygen content. During warmer seasons oxygen content of the water should be at least 5 mg/l (oxygen saturation at least 50 %). In the winter the crayfish can adapt to short periods with 2 – 3 mg/l content if all the other environmental conditions are favorable.
Crayfish...