I've just switched to a 250hps in my tent.. From some couple year old vipar Led's.. Which I have to say were fine to get me growing.. My first grow with the hps has given me much better results than the old vipars.. 1 week to chop but I can already tell that results are much better with the hps.. Also it helps keep my temps up in the loft in winter which is very handy.. One of those cobs could well be what I need for the couple of warmer months that we get now and again in the uk.. Summer it is apparently lol lofts are extreme.. Sweltering when its warm and Arctic when it's cold!! If we get any sort of summer at all the hps will be way too warm and impossible to control in a sweatbox loft. Are u shipping to the UK??