Hydroponics systems include the nutrient film technique, aeroponics, and the aeration technique. In the aeroponics method plants are anchored using screens, rigid pipes, or films. The required nutrients are mixed into the plants’ water supply artificially. 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. Identifying the spider mites will be easier if you use a garden microscope, which will give you a better view of the tiny bugs. Many think using pesticides to eliminate spider mites in their hydroponic gardens is a good idea, but the use of pesticides in hydroponic gardening is discouraged and usually not necessary. Nutrients are a key factor in a successful hydroponic garden. It’s vital to choose a nutrient solution formulated for hydroponics. Standard fertilizers sold in garden stores are not generally suited for hydroponics, as they do not contain specific trace elements, which are necessary for a balanced hydroponic formula. The most popular method of generating carbon dioxide for your hydroponic plants is the use of a pressurized carbon dioxide system. The equipment is relatively inexpensive (under $500) and the operating expense is low. In addition this system does not generate heat so it is easier to regulate than other forms of generating carbon dioxide. The nutrient solution circulates around the roots of your plant and the formula will either make your plants happy and fruitful or kill them. The perfect level must be found for the plants you are trying to feed. The pH level for plants determines what type of nutrient solution that they need. Acid loving plants need a pH level below 7 while other plants need a level above 7 to achieve optimal growth. Some of the more popular water culture systems include raft systems, nutrient film techniques, and aeroponics. Hydroponic gardening requires an energy source in order to grow. Usually, natural sunlight is used, but during the shorter and darker days of winter, many hydroponic gardeners use artificial lights to increase the intensity of light or to expand the daylight length.