SNS 604B Flowering Growth SupplementSNS 604A Vegetation Organic Growth Supplement Concentrate & SNS 604B Flowering Organic Growth Supplement Concentrate (512 to 1) Grow Bigger, More Robust Roots & Flowers for Larger Yields SNS 604A and SNS 604B are each one part nutrient additives to be used throughout the plants growing and flowering cycle. Stimulates root growth and builds up hardy, productive roots fast with 100% natural growth hormones. SNS 604A and SNS 604B are a concentrated blend