AmnZhzanswered grow question 4 years ago Hi mate, underwater and overwater are bit tricky. One thing is sure, from overwatering you can get root rot. So when I am not sure I let the medium dry out completely for a couple of days and then I start again. Within those couple of days if the plant seems more droopy and not healthy I know its underwatering, if it starts looking healthy while medium dries out, then I know I overwatered since there was not enough oxygen in the roots. If overwater is your case, I would suggest when you start watering use a light phed mix of water with h2o2 to supplement the roots with a bit oxygen.