The aeration intensity must be sufficient to maintain oxygen levels above 2 mg/L, preferably 5 mg/L. The optimal aeration rate is a function of tank size and the density of cysts incubated. Aeration is usually provided by a simple tube connected to the air supply. The tube outlet must be positioned at the lowest point of the tank; if not, nauplii will actively accumulate under the aeration and die of oxygen depletion. In large tanks and high cyst densities, additional oxygenation may be necessary using airstones. Airstones, however, have the inconveniency of producing foam in which newly hatched nauplii tend to be caught. Excessive foaming can be reduced by disinfection of the cysts prior to hatching incubation and/or by addition of a few drops of a non-toxic antifoam agent (e.g. silicone antifoam).
Was this article helpful?
Are You Sick And Tired Of All The Fat-Burning Tricks And Trends That Just Don’t Deliver? Well, Get Set To Discover The Easy, Safe, Fast, And Permanent Way To Mega-Charge Your Metabolism And Lose Excess Fat Once And For All! This Weight Blasting Method Is Easy AND Natural… And Will Give You The Hot Body And Killer Energy Levels You’ve Been Dreaming Of.