SHOGUN Sumo Boost is a heavyweight bio-stimulant without equal. Standing proud as the champion of all yield boosters it triggers rapid gains in yield and quality by initiating a powerful and targeted flowering response. Plant efficiency is maximised to devastating effect, whilst quality, aroma and taste are improved via enhanced essential oil production. Choose standard sumo boost if you are going to use your nutrient solution straight away. If you are in active hydro or have large tanks, choose Sumo Active Boost instead which is formulated to stay stable in tanks for up to 14 days. Both products are used in the same way and have the same active ingredients, just one is formulated differently for longer tank life.