How much sand does a Big Rock require?
Each Big Rock (and Gemini) require different amounts of sand: Big Rock 1 – approximately 42 lbs. Big Rock 2 – approximately 22 lbs. Big Rock 3 – approximately 12 lbs. Big Rock 4 – approximately 10 lbs. Big Rock J7 – approximately 64 lbs. Big Rock 19 – approximately 54 lbs. Big Rock TNT – approximately 90 lbs. Big Rock CAD – approximately 48 lbs. Big Rock P – approximately 11 lbs. Gemini 2 – approximately 6 lbs. Gemini 3 – approximately 4 lbs.
