What I was getting at is that I have never fed a seedling. There is usually enough food to wait three weeks and then I start at 300 ppms. RO water Cal mag, Nitrogen, micro nutes, molases white shark, Pot of Gold, Diamond nectar, silica, and floralicious. So what I am asking is when can you start feeding them? I forgot to mention: humidity 50% temps high72 lows 68 and that low is climbing to 72 some warm days. I hand water unless I am out then I use a res that has gravity flow that has a timer on it that floods the tray every three days. It works great.