The hydroponic systems also require less space, because the plant roots don’t have to spread and search for food and water. The small space requirement makes hydroponics perfect for limited space home gardeners. The greatest benefit to hydroponics is the ability to automate the hydroponics system with timers and remote monitoring equipment. The need reactant molecules to fit precisely into their gaps so all of the negative and positive charges have to line up exactly. Plants are able to change their own cellular pH level to stop or help speed up a certain enzyme reaction. The electrical charges in soil particles are different from those in mixtures with no soil. There are a variety of benefits associated with hydroponic gardening. When plants are grown using hydroponics, the roots do not need to search for required nutrients. The nutrient solution is provided directly to them, which results in plant growth, which is more abundant. Incorporating hydroponics into an outdoor garden can help add interest and intrigue. Fourth, the decomposition of organic matter such as compost will create carbon dioxide. Finally, the use of compressed bottled carbon dioxide is the most commonly used way to create the gas in a greenhouse for the desired effect. Large greenhouses have burned hydrocarbon fuels for years in an effort to increase growth in their plants. Many different civilizations have utilized hydroponic growing techniques throughout history so they are not a new method of growing plants. Giant strides have been made over the years in this innovative area of agriculture. Throughout the last century, scientists and horticulturists have experimented with different methods of hydroponics. While research is happening to try and bring the costs down, and there are some promising leads, like the field of aquaponics, hydroponics is currently financially prohibitive for some. 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.