Soil Required (sq ft) —

Formula: linear ft × bedrooms × 24
75 min = 125 ft · 45/60 min = 110 ft · 30 min = 100 ft

Bedrooms Supported —

Formula: soil ÷ (linear ft × 24)
75 min = 125 ft · 45/60 min = 110 ft · 30 min = 100 ft