Advanced Nutrients - Big Bud CocoThe Best Booster Now Tailor Made for Coco! Big Bud Coco takes the classic Big Bud formula and optimises it for use in coco coir. It contains a wide spectrum of yield boosting and flavour enhancing ingredients. One of the most important of these ingredients additives is iron, which (like calcium) coco coir has a tendency to hang on to, leading to deficiencies. While many other boosters neglect this fact, the team of scientists at Advanced Nutrients