Fumari Hookah Tobacco, Hookahs, Charcoal & Accessories

What is the proper proportion of hookah charcoal I should order?
Every 100 grams of Fumari's Hookah Tobacco, which fills 5 to 6 bowls, requires 20 to 30 pieces of Hookah charcoal.

Examples:

200 grams = 40 to 50 pieces of charcoal

300 grams = 60 to 70 pieces of charcoal

400 grams = 80 to 90 pieces of charcoal

500 grams = 100 to 110 pieces of charcoal

600 grams = 120 to 130 pieces of charcoal

700 grams = 140 to 150 pieces of charcoal

800 grams = 160 to 170 pieces of charcoal

900 grams = 180 to 190 pieces of charcoal

1 Kilo = 200 to 210 pieces of charcoal