Does this make sense? I calibrated my SP0 BackPack Sprayer with 5 Gallons of Water and covered 1800 Square Meters. 1800 Square Meters is .45 acres Tri Kill is rated at 5.5 litres per Hectare for non Bent Grass. (60ml/100 Square Meters) 1800 Square Meters = 0.18 Hectare 0.18 Hectare Times 5.5 litres = 0.99 Litres. So 1 litre of Tri Kill per 5 Gallon Tank? Sounds High to me. Did I calibrate/calculate wrong? 60ml times 18 = 1 litre roughly. Thanks.