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. Natural enemies will feast on the spider mites until there aren’t enough for the predator to survive, then they will die off or leave in search of more food. Releasing predator insects into your hydroponics garden infestations of spider mites can be eliminated or, they can be avoided. There’s no need to worry with predator insects, because most will not harm your crops. The nutrient mixture is the right one for the plant, in the right ratios, every time. The fear of soil-based diseases is eliminated, because, of course, there is no soil. These two factors come together to make hydroponics an extremely efficient method of food production. Hydroponics is also environmentally sound. 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 cost ranges from several hundred dollars to over $500, depending on the add-ons that you think you will need. A small greenhouse can cost considerably more because you will need to either include a cement floor and drainage system or lay other types of flooring such as gravel before you build the greenhouse itself. 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.