We just started a new 29 gal long tank and are trying to grow a carpet plant from seed. Its the end of day 4 and its growing well but it seems like they are getting tall instead of staying low to the ground like I thought they would. Does anyone have advice for me, maybe I am doing something wrong. This is our first tank we are doing this to. I used fluval plant and shrimp stratum, i bought a floramax plant bulb to put into the light fixture. I added a picture.