hello everyone, im new to homegrown and started my first grow with a seed from a good stash. i cracked 3 seeds and now am down to one plant, because the other two didnt sprout up after planting in topsoil from my garden(my garden was just recently fertilized with horse manure). the plant is in its second week now and is sitting in a 6 in flower pot under 2 40w bulbs 6 in from it. im running the lights 247 on it and it seems to be fairly happy having grown about a cm a day. what would my best bet be for a readily avalible fertilizer for further on down the line? any other tips would be well appriciated.