Ya good idea just plant some more asap and call it a lesson learned...I can't be sure the cigarette thing is detrimental but their are many better options available, I sure wouldn't want to get sprayed with nicotine and chemicals! Also 18/6 is fine your plant should not be budding I have no clue why it would do that..it was outside and it still only got that tall? Was it in the shade and clay ground?? Something just doesn't add up...start over with good Ph balanced soil, leave tap water out a couple days before use, and use a proper full nute line..that is all you need to do to start learning to grow..make sure you have no bugs inside before starting the new plants..oh and male sure you have enough light I forgot what you said you were using but I've used either 4 foot flouros or 100 watt compact flouros, make sure the bulb package says daylight on it!