63 Sterile Leaches: Home-Farm Starter Pack. These Leeches are perfect, because they have never been fed before. This package is great for starting a leech pharm and for raising leeches by the dozens. You can begin by feeding them, until they grow larger and and begin pairing themselves into breeding couples. At that point you would allow them to cohabit-ate and reproduce over time by delivering a slue of cocoons with baby leeches inside. If you prefer an older leech type for starting your leech pharm, it might be worth going with the larger leech size, such as the