Preheat Spark Grill to 550F.
Cut 3 limes in half grill and grill cut side down for 3 minutes, then juice.
Cut 1 grapefruit in half grill and grill cut side down for 4 minutes, then juice.
Gather Codigo Rosa, Agave, Simple Syrup, and Sparkling Water.
Over ice, add 1.5 oz tequila, grilled grapefruit juice, grilled grapefruit juice, .5 oz agave syrup, and top with sparkling water and then stir well!