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. The potential of hydroponic culture is incredible, but commercial hydroponics in the United States was held back until hydroponic systems that were economical to build and relatively easy to operate became available in the marketplace. With the advent of high tech plastics and simpler system design, this came about in the late 1970s. 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. Growing plants hydroponically is not simple, but with time it will become an easy routine. Dry ice, which is solid carbon dioxide, is effective when used in a well-sealed area. The ice can either be used in block form or broken down into small pieces and used a little at a time. Another method is to put the dry ice into a Styrofoam container with holes in it to slow down the rate of evaporation. Hydroponics is the practice of growing plants without soil as hydroponics cultivates plants in nutrient-rich water. This is an advantageous method of gardening for home and for commercial use. There are no weeds to deal with and hydroponic plants are typically healthier, mature earlier, and use less space. 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. For optimal growth, the amount of light your plants receive can be the difference between life and death. Too many lights can dry out your plants while too few can have your plants stretching desperately towards the lights.