My opinion yes yet until the start to mature, You can keep the t12 8 to 10 inches or even closer to the top of the seedling then you could 1000 watt MH this will help the plants from stretching. I'd veg under the t12 for 2 to 3 weeks then go to ether 18/6 or 16/8 until they are just about 6 to 8...