I personally like House & Garden. You have 3 choices, Aqua A+B, Coco A+B, Soil A+B, ~$40(Ontario) for a 1L kit(2L total). Very basic feeding schedule, the ratio stays 1:1 throughout the entire grow. They have the two best additives on the market, Drip Clean, which costs ~$30 for a 250mL bottle...