Hi there. Just some advice plse. I've got a small grow tent 4" tall 2x1.5" area. I'm growing 2 autos together for very first time. Total newbie. Currently week 7 showing pistils and beginnings of very tiny buds. In soil. Auto fresh candy. Used pk13/14 0.0002 mls first time this week. My LED is 300watt. My 2 plants don't seem to grow v quick. I've got another smaller led (100watt) kicking around. Can I use 2 lights together at the same time even tho they're different watts?