I left these little babies next too a big glass door for a few days. This door gets a good portion of the days sunlight. It was easy to monitor them and it was their birth place and I didnt want to move them just yet. I continued a very light water only just around the sprout. The whole idea is to keep the sprout healthy as its tap root moves down towards the reservior (approx 10 days). After about one week, I gave it enough water so that the res was full and water slightly leaked out. Growth was very slow compared to what we normally see on successful grows.....but just wait