Q: 1 What is Seaweed 23% Carboxylic Acid 2% Amino Acid Promoter? A: 1 Seaweed 23% Carboxylic Acid 2% Amino Acid Promoter is a liquid nutrient supplement designed for use in agricultural and plant growth applications. The product is a combination of 23% carboxylic acid and 2% amino acid, offering a unique blend of nutrients that help promote plant health and growth.