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Plants are grown in microgreens system for 1_2 weeks only. However hydroponic systems are designed for the full growth of plants. A simple hydroponic systems can be made from used polyethylene terepthalate PET bottles. It is a useful way to recycle waste into useful hydroponic planters. 

Step1: you can use any PET botter take a used PET bottle of 2L capacity. Cut the top (10_15cm) with a cutter or knife under the teacher supervision. 

Step2: Flip the top upside down to rest on the larger bottom part. The top part with be used as a planter while the bottom with be used as a water reservoir. Using a screwdriver or scissors make a hole in the bottle cap.

Step3: Attach a wick of any waste cotton cloth or thread through the cotton or thread through the hole. 

Step4: Fill the bottom reservoir with water. Place the cap on the bottle and fill the latter with growth medium.

Step5: Once the soil gets soaked, plant ☘️ seeds or ? seedlings.

You can paint your hydroponics planters. Plane a thread for hanging on wall or windows. You can also use PET bottle of different shapes and sizes to decorate a wall or window in school .

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