Closet Grow Aerogarden/soil

I am currrently a few weeks into my first grow. I started with an aerogarden and some bag seeds. Things started off really well but at about 14 days in I noticed yellowing in both plants. I added the aerogarden nutes and the plants got even worse so i flushed out the water and added a 9-18-9 nute supplement to the water and no aerogarden tabs. I did tha yesterday and I think Im seeing improvement. I didnt want to just grow bagseeds so i bought 2 feminised ak48 seeds from nirvana and I planted them in Fox Farm organic soil. SInce ak48 is supposed to be a small compact plant I just planted my seeds in pots that i hope they can stay in until harvest. Since Im using a good soil and a fast maturing plant, do i need to add any nutrients during veg state?? I bought a bottle of ff tiger bloom for flowering, should i start using this as soon as it starts to show sex? Should i be using nutrients during veg state? Ive also read that ak48 is autoflowering, does this mean I can just leave it under 24 hr light til harvest? I guess this is why Im posting this thread, or I guess i will learn on my own. Im not too worried bout the aerogarden plants, but i def want the ak to turn out good. Any answers to my q's would be great.