Day 15 transplanted in big pots, round pots are 20L, and square pots are 18L. I like watering the entire pot with the same amount of water throughout the grow, but just changing the frequency of watering as necessary. These ladies were taking 3L of solution but they were not all watered at the same time but as needed. Wedding Cheesecake drank the least and Gorilla Cookies were both very thirsty plants from the early days. Bud Candy was used from beginning to end of grow and Voodo Juice, Piranha, and Tarantula once a week. My water is around 7-7.5 PH and I didnt measure the solution PH or used PH up or down products throughout the grow,