3.6.4. Harvesting/concentration and cold storage of rotifers
As explained earlier, the harvesting and concentrating of non-enriched rotifers should be
performed in submerged filters (see 3.5.4.). Harvesting of enriched rotifers should be
carried out with extreme care in order to prevent them sticking together in clumps.
Especially when the enriched animals are concentrated before the washing, aeration can
easily result in clumping. Instead of pouring enriched rotifers in a bucket it is therefore
recommended to siphon them so as to avoid the interference of the air bubbles.