What kind of 150 watt bulb is it, check ph level of water, make sure your nutrients are suitable for the flower stage and not veg state.....start by flushing 5 gallons of fresh 6.2 balance water no nutrients. the bulb should be a hps high pressure sodium or at least a metal halide designed for plant growth.....don't forget flush the roots really good add your nutri on your next feeding not this one........you must also insure AIR FLOW:rasta: