So its actually 2.2 pounds a light. regardless of your timer switch You can only run 1 light in a room for 12 hours for bloom.1 light for 12 hours is 1 light. The claim that its 4.5 pounds a light is very misleading. Its technically 4.4 pounds per 2 1000 watt lights. That's about average or slightly above. When your at the 3 pounds a light we can talk.Take clones from mothers.
Divide your room in two creating 2 light proof rooms. Run two lights to one ballast. Set each room on opposite 12 hour cycles so when the light shuts off in one room it turns on in the other so you have 2 flowering rooms from one light.
In each room put 100 clones under the light at a density of 4/ft2 . 100 clones in a 5" x 5" area 4 per square foot.
This is called a sea of green style grow. Grow the weed through a mesh screen for extra support and cut any growth below your main cola. The goal is to grow a top only. As a growing medium use DWC bins but soil.works fine. Use a good nutrient solution like tiger bloom. Flush it just water the last 2 weeks of flowering. Keep temp around 75c and humidity around 40%.
Here's the secret to HUGE yield.
Keep CO2 levels at a constant 1500 ppm. Use co2 kit to achieve this.
You will get 4 lbs from a single 1000w light
Dry and cure. Jar cure for 6 weeks..
Peace