The 250 should be closer to the tops of the plants around 2feet or half a meter...most cupboards are up at shoulder height or higher....that means in the summer it will be much much warmer and that could cause a problem to the plant's health.....a 250 is for the most part pretty safe so you most likely would never have any burning probs unless it's touching something. You must have a pretty big cupboard because most are less than 3 feet high, unless I missed something??
solidsnake Reviewed by solidsnake on . just got a sodium 250 watt...for my plants...need advice on a few questions plz OK ive been growing a few plants for a week now and the plants are about 3 inchs tall and a bit streched. i just got my light and have it in my cupboard a metre above my plants,the walls are all covered with reflective roll. now what light hours should i give it? and how high should the light be? havent got a fan yet,but will get a small one for vent tmr...a bit of air will get through the gaps for now am i right? lastly im a bit stressed of how hot itll get...any chance of it burning Rating: 5