Humboldt Nutrients from California and are one of our favourites. This plant nutrition line-up is a component system, a little like the Advanced Nutrients. However, all the nutrients are as good as, or superior to the Advanced Nutrients equivalent. All the nutrients and boosters are highly concentrated and have been developed with the commitment of providing growers with the highest quality products possible. The superb Master A+B contains only amino-chelated nutrients with absolutely no EDTA (unlike virtually every other nutrient on the market, including Advanced Nutrients), and it can be used for every growing style and in any grow medium (substrate). Amino-chelated nutrients are much more easily absorbed by plants, and can grow huge healthy plants, end of argument. As well as the fantastic Master A&B base nutrient, and Oneness - a ridiculously good 1-part base nutrient. On top of that, the Humboldt Nutrients range of boosters and additives are amazing value-for-money and could possibly produce the best grow that money can buy. If you fancy dabbling to find out how good they really are, just give Ginormous a go in place of your normal flowering booster - we think you'll be impressed!