Fox Farm Tiger Bloom 1 Gallon Blossom Builder Extra Strength Product Description Premium Plant Nutrient 2-8-4 Tiger Bloom is our most Vicious Bloomer with Micronutrients. FoxFarm Tiger Bloom is an ultra potent, fast acting, high phosphorus fertilizer that also contains a good supply of nitrogen for growth and vigor. It is formulated with a low pH to maintain stability in storage and keep micronutrients available. Tiger Bloom can be used for both hydroponic and soil applications.