i think watering it every other day would be about right....the leave's other than a little droop look nice and green...if you feed it..feed it lightly..about a quarter to a half gallon of water every other day..just guessing by the size of the pot..a metal halide would help in veg...but you will get by ok with a HPS..if thats all you got..your HPS can probably go withing a foot and a half from your plant's ..especialy if you put a fan on the light and plants ...