help 1st grow

I have been growing my plant for almost 6 weeks from seed and have just changed from a 16/8 cycle to a 12/12 5 days ago. When i did this change i also changed my lights. This was from a 125W eco bulb to a 250W hps. The light is between 1 and 1.5 feet away from the top of my plant. Ever since i...

Ok so i brought my plants in from outside and they where doing fine but then i put them in bigger pots and now my leaves are a dark green and curving down some this is an organic grow so i haven't added anything but when i moved them to bigger pots i put in some compost. Could it be the soil...