have used many but - Humbolt Couny's Own comes in 1st -- in the past used Advanced Nutrient Line , Elemental Nutrients, Neptune's Harvest, Nector of the Gods all were good nutrients, whwn it comes to additives: Soil Balance,Massive Bloom, Terpinator, Purpinator, Mamamth P, Fish Shit and HB-101 and one more REV (organic plant stimulator)