How much light or how many lights do i need for a 4x4x8 grow tent i have one 1500 watt king led light but i was told by several people i need more light for my tent it has 5 females in it this time but will have about 10 this next time depending on the size after veg if i buy another light how big should it be 1000 or another 1500 watt my first grow resulted in very short plants they are very good plant loaded in small buds they just never did much during veg or flower and i want to fix this before i flower my next group of females