Your plants love phosphorus and potassium at the start of bloom phase. That's why professional hydroponics growers have long relied on powdered bud blood. And now you can use this new and improved Bud Blood Liquid ... reformulated with upgraded potassium and phosphorus into a liquid formula that delivers phosphorus and potassium in all kinds of hydroponic systems. Bud Blood can be used in any hydroponic or soil based systems. Bud Blood Powder is a new product that is packaged by advanced Nutrients.