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The Ultimate Guide to Transplanting Germinated Seeds into a 5-Gallon DWC System



The Deep-Water Culture (DWC) system is one of the most efficient hydroponic methods for growing plants. It's known for faster growth rates, higher yields, and a more hands-off growing experience. But before you get to reap these benefits, the first step is to successfully transplant your germinated seeds. This guide will walk you through the entire process of transplanting your little sprouts into a 5-gallon DWC system.





What is a 5-Gallon DWC System?


In a DWC system, plants are suspended in a nutrient-rich, oxygenated water solution. The roots dangle directly in this solution, receiving all the essential nutrients for rapid growth. A 5-gallon DWC bucket provides ample space for root expansion, which is ideal for plants that can become quite large and complex.


Materials Needed


⦁ Germinated seeds in Rockwool cubes

⦁ 5-gallon bucket with net pot lid

⦁ Hydroponic nutrient solution

⦁ Air pump and air stone

⦁ pH test kit

⦁ pH up and down solutions

⦁ Grow lights

⦁ Water thermometer

⦁ Hydroton, (expanded clay pellets), to fill net pot


Preparing the DWC System

  1. Bucket Setup: Fit the net pot snugly.

  2. Air Stones: Place an air stone at the bottom of the bucket and connect it to the air pump via airline tubing. This keeps the water oxygenated.

  3. Water and Nutrients: Fill the bucket with water and mix in your hydroponic nutrient solution following the manufacturer's guidelines.

  4. Check pH: Use a pH test kit to measure the pH of the water. Adjust if necessary.

  5. Temperature: Ensure that the water temperature stays between 65–78°F (18–25°C). You can use a water thermometer to monitor this.


Transplanting Germinated Seeds

  1. Check the Seedlings: Make sure the germinated seed has at least one set of true leaves and has roots protruding from the Rockwool cube.

  2. Net Pot: Fill the net pot with Hydroton, leaving a hole in the middle for the seedling.

  3. Transfer the Seedling: Gently take the germinated seed in its Rockwool cube and place it in the hole you’ve made in the Hydroton in the net pot. Add more Hydroton around the Rockwool cube to stabilize it, almost covering the cube completely.

  4. Position in the Bucket: Place the net pot lid so that the bottom of the net pot is just barely touching the nutrient solution. As the plant grows, the roots will grow down into the nutrient solution.


Ongoing Care

  1. Nutrient Levels: Regularly check the nutrient solution level and adjust as needed. Also, replenish the solution level, ensuring it just barely touches the net pot.

  2. pH Monitoring: Frequently check the pH levels of your solution. Cannabis prefers a slightly acidic environment with a pH of 5.5–6.5.

  3. Oxygenation: Ensure the air pump is working effectively to keep the nutrient solution oxygenated.

  4. Lighting: Once transplanted, your cannabis plants will need substantial light to grow. For vegetative growth, aim for 18–24 hours of light per day.


Tips and Precautions


⦁ Root Rot: Keep an eye out for signs of root rot, such as brown, slimy roots. Proper oxygenation usually prevents this, but if it occurs, consider using beneficial microbes or specialized root rot treatments.

⦁ Sterility: Keep all equipment sterile to minimize the risk of disease.

⦁ Training Techniques: As your plants grow, you may consider training techniques like Low-Stress Training (LST) to maximize light exposure to all parts of the plant.

⦁ Stage Transition: Be prepared to change the light cycle and nutrient mix when transitioning from vegetative to flowering stages.

⦁ Humidity and Temperature: Try to maintain a stable environment. During the vegetative stage, aim for 40–60% humidity and temperatures between 70–80°F (21–27°C).


Transplanting your germinated seeds into a 5-gallon DWC system is a straightforward but crucial step that sets the stage for your growing success. Providing a well-prepared environment and ongoing care can result in robust plants and bountiful yields. Keep tabs on

all the parameters and adjust as needed to ensure you're on the road to becoming a successful cultivator. Happy growing!



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