Once again, the more plants you have the more advanced equipment you will need. If you are still unsure about starting a hydroponic garden, you can get everything you need in a little kit called a plug-and-go hydroponic gardening kit. These little kits have everything you need to get you up and running with this fascinating hobby. Hydroponic plants are grown in a number of ways, each supplying nutrient solution to the plants one way or another. Hydroponics can be used to grow plants anywhere, even in your own backyard. Using hydroponics can grow anything from garden crops to flowers. Hydroponic gardening is considered to be a clean and highly effective method for growing plants. Hydroponics is the practice of growing plants without soil as hydroponics cultivates plants in nutrient-rich water. This is an advantageous method of gardening for home and for commercial use. There are no weeds to deal with and hydroponic plants are typically healthier, mature earlier, and use less space. The plant roots are suspended within the water by various designs and the crop obtains the food nutrients directly from the water, or from an air mist sprayed directly unto the plant roots. Hydroponics also requires the use growing media. Hydroponic systems use various mediums that are composed from relatively inert materials that have the ability to retain the food rich moisture and have the ability to physically support the plant roots. Many people who grow their hydroponic plants in a greenhouse will also find that they need the correct amount of carbon dioxide in the air in order for their plants to flourish. The addition of carbon dioxide in these small spaces can be accomplished in several ways. Burning hydrocarbon fuels, the use of dry ice, fermentation, decomposition of organic matter and the use of compressed bottled carbon dioxide can create the correct atmosphere for your plants to grow in. Different types of artificial lighting are selected for specific plant varieties and optimum plant growth characteristics. In hydroponics, nutrient solutions are used to feed plants instead of using plain water. This is due to the fact that the plants are not grown in soil. When growing hydroponically, the gardener will need to add all of the nutrients the plant needs to the water.