Alright after reading the troubleshooting form sounds like things should be going ok for you. As far as the dark green leaves, I really don't know, maybe someone else could help you a little more with that. Only thing I've seen that you've added is Superthrive, unfortunately I don't use that product or am I too familiar with it, so I really don't want to steer you wrong. Sorry

As far as your leaf tip starting to point down, thats just caused from your soil's pH being a little low. Almost everyone deals with this issue to some extent. Not really that big of deal as long as you are aware of what it is, and are careful when watering and feeding not to drop it anymore. If left completely unchecked it can result in lockout. However with you having new plants the soil's buffer are still present and you don't have anything to worry about. I have "problems" with Fox Farm Ocean Forest doing the same to my plants slightly for a couple weeks after transplanting.:thumbsup::thumbsup: