i think its ok, i fertilize since they are young like yours, and mine grow like magic beans! soon in a trip ill be able to visit a gigant in the sky! lol!

Its ok, maybe the light is too close to the plants and its buring them, if the light gets too hot and its too close, you are just burining the tips... + give them some dark, thats better for them.
Oh and something else, when you put the fertilizer in, dont spray the plant, and watch the fetilizer that dosnt touches the plant, only the soil.

Keep the growing man!
marimbas Reviewed by marimbas on . Please Help Me (Pic's Inclosed) Hi im starting off with just a couple plants under 4ft fluro Cool White Ultra High OutPut..for veg..well last night i noticed one of my plants 2nd set of leaves started curling upwards..Then today when i came home from school..The tips were brown..Is this a magnis. def. or what please help ..I use Expert Gardener nutes 15-30-15...I dulute it in gallon jug since there so small..Soil for the one that is messed up is Oragnic Mix Pro...Other one is just black dirt with perlite...I water once a Rating: 5