Hey so i have a 55 gallon drum full of water hooked up to a timer and a 5.8GPM drip 25 psi drip system. I have 5 plants in 5 gallon pots. How often and for how long should I run them every day and week? Please help...thanks!
You mean 5.8
GPH?
I have a full drip system for 24 plants with 60PSI reduced to 20PSI at the line solenoid from a well pump. I've long asked the question of what GPH drip heads (emitters) on several weed forums and never received any response, so I eventually went to a master gardener and received the following instructions:
1. Use 1GPH emitters for all plants. The slower water enters well-amended soil the better the absorption rate.
2. I hand water my 5-week old plants under lights 14/10 with 8oz/day, including 4-hours in the sun daily for the last week to harden them (amended soil with excellent drainage). They go outside full-time today (remaining in 3.5 gal pots until sexed) and will get 5-minutes of drip per day, adjusted as required.
3. 128 ounces in a gallon divided by 60-minutes equals 2.13-ounces per minute of 1GPH drip, which I'm increasing to 5-minutes due to the increased lumen from direct sunlight.
4. Let your plants tell you when they need more water. A little wilting from being under watered won't hurt them, they snap right back and let you know to increase the water, while over watering them in pots is asking for root rot.
5. The females will go in 3' deep holes with damp, amended soil. At that point I'll up the time to 15-minutes of watering and adjust accordingly as the summer heat begins and those babies do suck-up the water.
6. When full summer heat requires more than 1GPH daily, you can increase time or add 1GPH emitters. For in-ground plants I'll have 3-4 1GPH emitters around the plant at the height of summer heat. Always run your drip about 4am, or before your sun comes up.
Sorry for all the rambling, but there's no simple, easy way to grow quality weed.