The Artemia Combination Sieve is a novel aquarium accessory from German aquarium product manufacturer Hobby. The new import from Brine Shrimp Direct features a system of nesting sieves with mesh sizes inÂ 180, 300, 560, 900 Âµm (Âµm denotes micron, 1000 microns =1 mm). Although the Artemia combo sieve is aimed at sorting out the different sized brine shrimp from your Artemia cultures, there no reason this device couldnt be used to sort out some amphipod cultures, larval to post larval marine fish and even to hold and separate some of the tinier nano gobies. The 180 Âµm sieve is suited to sorting out newly hatched baby brine shrimp and it can be bought alone for $5.95 but the 4-pack combination sieve is a much better value at $12.95. Both kits are available now from Brine Shrimp Direct.