I planted my seeds straight into the aerogarden and let them germinate in there. I have the water pump on salad greens so it's always on and the light is always on as well because it's on it's own cord. Both of them germinated but one of them the first thing that came out, kind of green was white grew out of the top of the foam. It kind of curled up a bit and then back towards the foam and then shriveled and is brown. Was that first thing that came out supposed to be a root or the plant. Cuz if it was a root than it for some reason grew straight up. Everything i've found said that the seed is supposed to open at the top which it did. Am i misinformed and is it supposed to open at the bottom? Am i supposed to leave the water on always?