Use both dude, they work together, one promotes bigger buds, the other is needed for flowering, of course if you are looking for smaller buds, simply dont use the Big Bloom.............lol
Peace
Big Bloom™ Liquid Plant Food (0.01-0.3-0.7)
Natural and Organic Blossom Builder
This odorless, liquid fertilizer is a live culture of vitamins, amino acids, natural growth hormones, enzymes, and beneficial organic microbes. Our special, micro-brewed formula incorporates earthworm castings, bat guano and other high test organic ingredients that offer a full, balanced range of nutrients. Norwegian kelp improves nutrient uptake and increases yields. Rock phosphate helps transfer energy from one part of the plant to another, which means bigger buds and more fragrant flowers.
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Tiger Bloom® Liquid Plant Food (2-8-4)
Vicious Bloomer with Micronutrients
Ready to bloom? Tiger Bloom® makes it happen. This is an ultra-potent, fast-acting, high-phosphorus fertilizer with just enough nitrogen to sustain healthy, vigorous green growth during flowering. The low pH keeps it stable and ensures that the micronutrients will be available when plants need them. In addition to containing critical trace minerals, we brew our liquid fertilizer with earthworm castings and kelp meal for a biologically active formula.