... brown micro-floating, water soluble Main ingredient: Formula I: Potassium Fulvic acid + Seaweed extract (Organic ... 6-9, specific gravity: 1.20-1.25 Formula III: Potassium Fulvic acid + Seaweed extract (N: ... 6-9, specific gravity: 1.22-1.25 Formula IV: Seaweed extract + Organic matter≥200 g/ ... 43-1.46 Efficacy: More quick fertilizer efficiency, more long fertilizer period, increase crop's yield, improve ...