Answer
A budget cannabis grow tent setup costs $300 to $500 in the US for a 2x2 or 2x4 foot tent with one to two plants. A 4x4 foot setup costs $600 to $900. The total includes tent, light, fan, filter, pots, soil, and nutrients. It does not include seeds or clones.
Small Grow Room Setup Cost Breakdown: Where the Money Actually Goes
Item costs
Prices below are online retail prices in 2025 for new gear. Used gear can cut the total by 30% to 50%.
- Grow tent, 2x2x4 feet: $60 to $120
- Grow tent, 4x4x6.5 feet: $100 to $200
- LED grow light, 100W: $80 to $150
- LED grow light, 200W to 300W: $150 to $300
- Inline fan with carbon filter, 4 inch: $70 to $130
- Ducting, 4 inch, 8 feet: $10 to $20
- Clip fan, 6 inch: $15 to $25
- Timer, 24 hour: $10 to $20
- Fabric pots, 3 gallon, 4 pack: $10 to $15
- Soil, 1.5 cubic feet: $15 to $25
- Nutrient set: $25 to $60
- pH test kit: $15 to $25
- Thermometer and hygrometer: $10 to $20
Electricity cost
A 100W LED light on a 12/12 flower schedule uses 1.2 kWh per day. Over 70 days that is 84 kWh. At the US average of 16.5 cents per kWh, the light costs about $14. An inline fan adds $3 to $6. A 300W light in a 4x4 tent uses about 3.6 kWh per day and costs about $42 over 70 days.
How Much Electricity Does a Small Grow Use?
Setup total
2x2 tent with 100W light: about $300 to $450. 4x4 tent with 300W light: about $600 to $900. Add $40 to $80 per grow for soil, nutrients, and electricity.
how much electricity does a small grow use
Where to save
- Buy a tent and light as a kit. Kits cost 10% to 20% less than separate parts.
- Use a 2x2 tent. A smaller space needs less light and less fan power.
- Skip the carbon filter for the first grow if smell is not a concern.
- Use a cloth pot and a simple soil mix. Soil with slow release nutrients cuts the need for a bottle nutrient line.
Where not to save
- Do not buy a light with no wattage rating or no warranty.
- Do not skip a timer. A light schedule that changes can stress plants.
- Do not buy a fan that moves less than 100 CFM for a 4x4 tent.
Legal note
Home grow rules vary by state. California allows adults 21 and older to grow up to six plants at home. Check your state rules before you buy gear.