Hobbie Bug 20pc x 4 ml Plastic Disposable Coral Fish Food Feeder Pipette Pipets 20 low-density polyethylene transfer pipettes. Perfect for feeding small fishes, invertebrates, and corals. Can be used to dose trace elements or blow detritus off of livestock. Total volume of 4 ml including the bulb. Stem is graduated every 1/2 ml with the capacity of 3 ml.