Get precise EC and PPM feeding recommendations tailored to your grow stage, medium, plant type, and experience level. Covers all 18 stage-medium combinations.
The Seennabis Nutrient Calculator provides feeding schedules tailored to your growing medium (soil, coco coir, or hydroponics), growth stage (seedling, vegetative, or flowering), and target EC/PPM ranges. Cannabis plants require different ratios of nitrogen, phosphorus, and potassium at each stage. During vegetative growth, higher nitrogen promotes leaf and stem development. During flowering, higher phosphorus and potassium support bud formation and density.
Soil growers typically feed at lower EC levels because the medium buffers nutrients, while hydroponic growers need more precise measurements. Coco coir requires CalMag supplementation due to the medium binding calcium and magnesium — especially relevant in Canada where tap-water hardness varies widely between municipalities. The calculator accounts for these differences and provides stage-specific recommendations you can follow throughout your grow cycle, whether you're using Canadian-stocked nutrient lines like General Hydroponics, Advanced Nutrients, or House & Garden.