A Grow Room Setup: Step By Step Guide

If you are willing to grow marijuana indoors then the best way to do is to get started with a grow room setup. Growing indoors is the best way to reduce cost. Some may think that all the equipment you need would cost hundreds of dollars. But this is not true. You can always come up with equipment that is cheaper.

Almost in all the countries, marijuana is cultivated for medicinal purpose. It is possible to produce high-quality marijuana on your own. If you are able to set up in a correct manner, then the outcome will be rewarding. Before you start you need to make sure of few things.

  • Make sure that the room in which you are planning to setup is close to water and electrical supply.
  • Cleaning the room is important. You need to disinfect the walls and floors to avoid pests and diseases. Also, remove any sort of carpet type material as mold and dust can make their home.
  • Put the pots in a tray. So that when you water, spillage will not be a factor. The floor of the room must be a hard floor. This way you can clean in an easier way by mopping the floor.

Steps For A Grow Room Setup:

You need to follow a set of steps for getting started with a grow room setup. If they are followed in a correct manner then you are able to maximize the use of space. Also, you will produce more. And if the production increases your cost will also go down. The steps are discussed in an elaborate way for your convenience. They are as follows.


Design of the room

Before you start and go buying the equipment, it is important that you design or layout the whole setup. You need to calculate how much space you need. Create a blueprint. This helps to maximize the use of space. Figure out how much electricity is needed. That way you can avoid any sort of fire disaster. Watering the plant is important. So, the plumbing system should support the setup design you are planning.

Marijuana is a crop that needs warmth and humid to grow in a proper way. So, the room you will select should not contain any type of furniture, curtains and so on. These would attract pests, molds or other things that can invite diseases. Empty the whole room.

Material and equipment you need

Try to list all the things you need. This way when you go out buying you will not miss on any important item. To have the basic setup you need different items and they are:

Light leaks

If the room is not dark the plants will force themselves to become male plants. The yield of the crop will reduce if they become male plants. So, it is an important factor for grow room setup. Since complete darkness is needed you can use light leaks to ensure this. Seal with opaque tapes in any place that is leaking in light from outside. To find any leakage turn off your grow room light. You will see lights if there is any leak. If there is any window, cover it up.

Reflective surfaces

You need reflective surfaces to make sure that the plants get enough light. This will help to improve the yield of the crop. You can adopt these few items.

  • Mylar: It is the most reflective item available in the market. They can reflect over 95% of light. Mylar comes in different forms. You would want to buy the ones that are aluminized. Put the up on the walls with the help of tapes. Lay them flat so that it reflects better. If touched too many times there are chances it may tear. So, try to avoid too much contact with it.
  • Flat white paint: If you are trying to save money then this is a great option for grow room setup. It can reflect up to 85% of light which is pretty much a big amount. The paint has little to no light absorbing properties. This helps to create no hotspot.
  • Emergency blankets: These are one of the cheapest reflective items that you can buy. They are available in any camping shops. They can reflect up to 70%. You can use this if you have a very small room. Try to hang the flat on the walls. If there are any crinkle you will waste light. Also, there are chances that it may develop hotspot which can hamper the plants.

a grow room setup

Grow lights

For a grow room you need different lights that are not normal household lights. The bulbs should provide a full spectrum of light. You can select from these few ones.

  • Compact florescent lights: You can use these when you are planting the seeds. They do not produce much light.
  • High-pressure sodium lights: They produce a lot of light in the orange spectrum. This is best in flowering phase.
  • Metal halide lights: They produce a lot of light in the blue spectrum. This is best in vegetation phase.
  • LED lights: The best led grow lights is an important garden tools for grow room setup. They produce a lot of light. Also, they are energy efficient. It does not get hot for which you can place them closer to the plants without harming them. These lights are best for both flowering and vegetation phase.

Installing the lights is important. They need a hood so that the lights can focus on the plants in a direct manner. High-pressure sodium lights and metal halide lights are hot. They need hoods that can cool down fast. LED lights are generally cool so they do not need a cooling hood.

Electrical timer

It helps to turn on and off the lights. To help the seeds to start flowering you need to 12 hours of light. After that, you need to turn it off. There are chances you may forget to do it. So, with an electrical timer, you can avoid this sort of risk. You can set the timer and the machine will do its work.

Ventilation system

Circulation of air is needed to remove heat from the room. If there is good ventilation the plant will get proper CO2. You can control the humidity and reduce the smell of the plants. Good ventilations helps to reduce disease problems. You can buy these items for a grow room setup.

  • Oscillating fan: It helps to circulate air in the room. This way you are able to avoid hotspots inside the room. The air flow will help the plants to grow healthy.
  • Carbon filter: Marijuana releases an odor that is not nice. Try to install a carbon filter with an exhaust fan. This will help reduce or even eliminate the smell.
  • Exhaust fan: It is important to replace the air in the room. So, you need a good exhaust fan that has high CFM rating. This will ensure that the air is replaced in every 2 to 3 minutes. You need to calculate the cubic area of the room to buy the one you need. Also, keep in mind about the traveling area of the air.
  • Air intake: The exhaust fan will blow out the old air. So, now you need new air to enter the room. This, you can achieve by drilling tiny holes in the wall or door). There are chances that the holes might not be enough. In this case, air intakes come handy. They will pull in the new air inside the room.

grow room setup

Thermometer, humidity meter, and pH meter

A marijuana plant grows in certain temperature and humidity and pH range. Installing these items will help you provide the perfect environment to the plants.


Marijuana grows well in certain pH level. You can use tap water. But it is wise to make sure that the pH of the water is between 5.8 to 7. The water should not carry too many minerals or else it may hamper the plants. If the pH of the water is low, you can add lime or ashes from wood to increase it. If the pH is higher, then sulfur or phosphoric acid will do the trick. There are chances that the water in your area contains too many minerals. You can always filter it and then use it on the plants.

Final Word

In the end, I would say you need to follow the above steps for a grow room setup. This will 100% improve the crop yield. I would suggest that you buy the best grow tent with LED lights. They are more convenient. You do not have to buy different lights for every phase. Another, I would suggest is to avoid buying any type of foil papers. They reflect only 55% which is not enough for the marijuana plants.

Also, there are chances that the foils may catch fire due to hotspots. Moreover, if the foil is crinkled then you will waste light. Try to buy Mylar as they are the most reflective ones. All these garden tools are important for a grow room. They are available in the market. So, do not sit back. Have your own grow room.

Leave a comment: