Originally Posted by FilthyFletch

1 1000 watt hps is not enough light for that many plants.2 would be sparse 3 would be ideal.You may want to sell the 100 watt light and get 4 400 watt lights or 3 600 watt lights.The coverage would be better as you will need to cover a wide space to accomadate 21 plus plants.The 100 watt light will penetrate further down in a smaller area but no cover the space needed for these amounts of plants.2 plants should have gotten you 7 ozs.Are you using a good quality seed and not just some bag seed as quality seeds make a huge difference as street bag seed is usually from plants grown outside where they can be grown to 7 or more feet in acres of field so they are not as refined or picky whne planting them.Did you monitor your ph levels and ppms when feeding to make sure your levels are in the safe zones? Good soil?Watering seems light.I use 5 gallon buckets and water every 2 days feeding evey watering with the correctly diluted daily feed measuremnet on my fet bottles.You have to make sure you have room for the plants 2 unless your doing a straight sea of green.to max yeild a plant give it at least 2 square meters of room per plant.Do you have good air movement fans down low allowing good fresh air flow so the air is not stale? Did you use any kind of co2 injection or producer as thye can increase yeilds 45-75%.