You probably already know that hydroponic planters rely on a nutrient-rich water solution to grow plants without soil. What you may not know is that you don’t have to invest in an expensive unit to try your hand at growing plants hydroponically. You can make your own hydroponic planter with a two-liter soda bottle and fill it with hydroponic solution. Here’s what your need to know.
Wash and dry a two-liter bottle and remove the label.
Cut the top off the bottle just below the curve at the top.
Flip the top over and nestle it inside the bottom section so that it creates an area to hold your plant.
Insert a wick through the mouth of the bottle, so that it extends at least halfway into the bottom. You can use a piece of cotton rope or make your own wick from cotton fabric, such as a strip of t-shirt material.
Hold the wick in place with your fingers and fill the bowl with coconut coir, perlite or a combination of the two.
Make an indentation in the middle of the coconut coir and gently position the roots of your seedling in the hole. Firm the coir around the roots with your hands.
Lift the planting section from the bottle and fill the bottom of the bottle halfway with hydroponic solution.
Place the planter back in the bottom of the bottle.
Refill the reservoir with hydroponic solution as the plants grows and uses the solution.
As your seedling grows, its roots will extend through the mouth of the planting cavity and into the hydroponic solution. Once this happens you can remove the wick as your plant no longer needs it to draw the solution upward to the roots.