Many people want to start growing marijuana but don’t have a lot of money to buy all the equipment. Here’s a list of the most important items and what I would recommend. It is possible to set up a cheap indoor marijuana grow room. Marijuana plants need light, water and co2. Also, the temperature should not be too low or too high and a little fertilizer is needed.
Water - Just use regular tap water. If you can drink it so can your marijuana plants. Professional growers use corrected water with pH between 5.5 and 6.5 and EC between 1.8 and 2.2. There are 3 common methods for testing these values, but it will also work fine with regular tap water. Use some nitrogen (N) during the growth phase and some N-P-K during flowering. You can find this at your local garden center or get them from www.marijuanabooster.com
Co2 – All green plants, marijuana included, use light energy, water and carbon dioxide (Co2) to produce energy in the form of sugar for its growth (photosynthesis). You can use a Co2 tank with a regulator but you can also install a simple ventilation system to refresh the air in your grow room. Place a fan in front of the air-inlet and create an opening (as high as possible, hot air rises) where the warm air can escape. Download my free grow bible for more tips about growing marijuana at this link
Climate – The temperature should not drop below 64 and not get higher than 86. Around 77 is perfect! The HPS light will produce a lot of heat so if you install it in a 1x1x2m closet without ventilation temperatures will rise up to 125. Use a little more space and temperatures will be fine. All plants should move a little by the air flow in your grow room, just like the wind normally makes plants move.
Tips – Use aluminum foil instead of mylar or other reflective foil. Buy used equipment and be creative. See how you can set up a simple homemade hydroponics system. You don’t need a water pump, a bucket or watering can will also do. Also, you’ll need to read a lot about growing marijuana,
More at: I Love Growing Marijuana