You'll need a water source nearby, preferably with both hot and cold water so you can mix to the right temperature before adding water to your garden. A floor drain is also useful. Reflective material on walls, floors and ceilings will help to keep the area clean, but more importantly will ensure you get the most out of your lighting. Flat white paint is fine, however a specifically designed reflective material such as mylar is ideal. A white floor also helps because it reflects light up to the lower plant leaves, the area that normally receives the least amount of light.
Cleanliness is essential for success.
Before installing your new garden air out the area, spray it with an insecticide and thoroughly scrub with a disinfectant cleaner. Lighting Choosing the right lighting is one of the most important decisions you will make. Light is essential for plant growth and the closer you can come in intensity and colour spectrum to full natural sunlight the better. It does not matter to plants if their lighting needs are met by artificial or natural means as long as the intensity and light spectrum are right. Intensity is the brightness of the light i.e. the amount of light measured in foot-candles or lumens.