1st lowryder grow

I am getting 15 lowryder seeds for my first grow and I am wondering how many I could grow succesfully under my 400 watt hps. Also if anyone has any other tips for a first timer like me I would appreciate it!

did you get lowryder #1 or #2?

5 lowryder #2, 5 lowryder #2 X AK47, and 5 lowryder white dwarfs and they are all feminised.

400 Watt lamp = max. 4 normal plants.
so, because lowryder are too small, i suppose that you can grow about 7-8 plants maximum!!