If it is too humid for your plants the increase in respiration of the plant will decrease fruit life. A very dry climate is not good for most plants either. The ideal temperature for your plants will be between 40 to 97 degrees Fahrenheit. The actual temperature for the particular plant you are growing will vary. The Benefits of Gardening the Hydroponic Way Gardening has been considered to be one of the most therapeutic rewards for North Americans. Gardening stimulates all of the senses, giving great satisfaction and pleasure. Hydroponics is the growing of plants without the use of soil. There are a variety of benefits associated with hydroponic gardening. Commercial growers are changing to hydroponics like never before as the ideals surrounding the growing techniques touch on subjects that interest most people, including world hunger and making the world cleaner. Everyday people have begun to purchase their own hydroponic systems to grow great tasting and fresh food for their family and friends. There is a common misconception that hydroponics produces organic food. While it is possible to grow organic food through hydroponics, this is the exception and not the rule. Most growers used pesticides on their hydroponic crops. Though the pesticides used in hydroponics do not run-off and pollute the surrounding environment like the pesticides used on traditional fields, they are still on the plants themselves. How to Use more CO2 to Boost Hydroponic Plant Growth Carbon dioxide is needed in a hydroponic garden to guarantee continued plant growth because it is required for photosynthesis. Many gardeners do not realize that the larger their hydroponic garden is, the more their plants need carbon dioxide for respiration. ” In companion planting crops are intermixed with plants that act as spider mite deterrents for the primary crop. For example, marigolds may be planted between rows of herbs in a hydroponic greenhouse. Spider mites will be turned off by the smell of the marigolds and will leave the garden. Biological insect control is another method of pest management through the introduction of predator insects to eliminate spider mites.