I have had my plant for almost two months now and it is growing very slowly i add fish fertilizer once ever two weeks only a couple drops per cup. the leaves are sort of purple and the stem is partly red. but its sturdy when i bumped the base stem or "trunk" it felt very rigid and sturdy. please idk what im doing wrong here. oh its and led daylight bulb on a 18 6 light cycle and only water when soil is dry and inch deep.