50w to veg those two? with all due respect dude i would invest in a new light too, 600w hps or 250 cfl there are mixed opinions on which one, i myself hps.. search some threads see who has done what ect. i would get all those tools sooner rather than later a simple soil ph tester will be able to tell if its a nute problem. it could be lack of light for the wilt? u say winter is coming and u have them outside? thats only bout 9 hours 'decent' light right?, then sticking them under a 50w for the other 9/15? probably aint doing it too many favours, curling tip is probably nute deficiancy n maybe overwatering? lol get those tools! do u water till it runs out the bottom, then wait till 1st two inches of soil is dry and the pot lighter, they not keen on too much water either. demanding