I also have a few northern lights plants growing. Im on day 21, and let me tell you.. these plants are AWESOME! I have a couple bubble gum and big bud plants at well, but the NL are out growing them all. I didn't get feminized, but they sure do look like ladies (as far as i can tell without force flowering or covering a node.)

The NL that im growing seem to be able to take whatever comes their way. I had a calcium def early on, and most of the other plants started to yellow and brown but the NL kept right on pluggin away.

Happy Growing