All of these salts must be thoroughly dissolved before being allowed to circulate around your root systems. Micronutrients are also needed for proper growth of your plants. Boric acid, manganese chloride, zinc sulfate, copper sulfate and iron sulfate can be used in minute amounts in the nutrient solution. 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. Fermentation is another way to create more carbon dioxide in your hydroponic greenhouse. This method is easy to accomplish with few materials – corn sugar, brewer’s yeast, water, a small bottle and a larger container such as a garbage bag or large glass jug. The process is the same as creating a batch of wine, beer or mead. Most newbie gardeners can either purchase an easy to install grow room or build a greenhouse outside of their home. Small grow rooms for the beginning hydroponic gardener are usually slightly larger than a closet and can be completely installed in under an hour. The cost ranges from several hundred dollars to over $500, depending on the add-ons that you think you will need. 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. Hydroponically grown plants are not immune to spider mites, but they are more pest resistant than plant grown in soil. Flowers and tree seedlings can also be grown using hydroponics. Hydroponic greenhouses produce millions of plant seedlings each year, which are transplanted and grown at other locations where they are later planted into soil. There are many benefits to growing your own plants in a hydroponics system.