Hatching them first so the brine shrimp swim through and up to the lights. All i did was use a Rubbermaid container, cut the center of the lid out, cut a hole in the lid for the airline (quick is the feeding line), and put the netting between the container and lid. Hatch the eggs for a day or so, suck the up in a 30 mls syringe (any syringe minus the needle would work), insert the end of the syringe into the airline and press. That's all there is to it.