Water to add to bring a wort down to a target gravity.
Extract is conserved, so points₁ × V₁ = points₂ × V₂ and V₂ = V₁ × points₁ / points₂. Returns a zero change when the target is at or above the current gravity, since you can't dilute upwards.
points₁ × V₁ = points₂ × V₂
V₂ = V₁ × points₁ / points₂
Water to add to bring a wort down to a target gravity.
Extract is conserved, so
points₁ × V₁ = points₂ × V₂andV₂ = V₁ × points₁ / points₂. Returns a zero change when the target is at or above the current gravity, since you can't dilute upwards.