Cannabis Grow Calculator
Enter your setup details and get instant recommendations for your South African indoor grow — light wattage, tent size, estimated yield, and monthly nutrient budget.
Targeting keyword: cannabis grow setup calculator South Africa
Your Grow Setup
Your Estimated Setup
Recommended Light
260W LED
Energy-efficient — ideal for SA electricity costs
Suggested Tent Size
100×100cm
For 1m² growing area
Estimated Yield
90–160g
Across 2 plants
Nutrient Budget
~R250/month
Soil grows are lower-cost
* Estimates based on typical South African indoor grows using standard techniques. Actual results vary depending on genetics, environment, and grower experience.
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Common Questions
How accurate is this calculator?
The estimates are based on typical South African indoor grow averages. Real results depend on genetics, experience, environmental control, and training techniques. Use this as a starting point, not a guarantee.
LED vs HPS — which should I choose in South Africa?
LED is the better choice for most SA growers. Modern full-spectrum LEDs use 35–40% less electricity than equivalent HPS setups and generate significantly less heat — both important factors given Eskom tariffs and our warm climate. HPS still has a place in colder climates where the extra heat is welcome.
Can I use this for both soil and hydro setups?
Yes — the medium selector adjusts the nutrient budget calculation. Hydro and coco setups require more frequent feeding and higher-quality nutrients, which is reflected in the higher estimated monthly cost.
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