from whats given it sounds as if the light is to far away, resulting in the plant "stretching" to obtain more light

how much heat does that bulb put off? if minimal then keep the light 2-5 inches away the closer the better - if that agro lite is a fluorescent , if it is not a fluoro then let someone more experienced solve your problem as it could be circulation or other issues causing it :jointsmile::jointsmile:
gl mate