The Kitchen Garden sales packages include the so called start-up nutrients to get you started. The water in Tregren’s herb gardens should be changed every 3-4 weeks when one dosage bag of nutrient shall be added, for T12 you need to add 2 bags of nutrients. The hydroponics fertilizer is developed by Kekkilä and it is packed in dosage bags so that the plants will always have the correct amount of nutrients. The fertilizer includes kalium, nitrogen, phosporus, minerals and additives.
The growth nutrient is sold in packages of 8.