Coral Growth Rate & Frag Yield Calculator

A coral growth rate and frag yield calculator estimates how much a coral colony may grow over time and how many additional frags that growth could support. It uses coral type, time horizon, starting frag count, frag size, calcium level, alkalinity stability, and lighting quality to build a practical projection.

This is useful for reef keepers who want to plan propagation, rack space, or coral sales without guessing. The exact growth of any coral will still vary by species and system, but a structured estimate is much more useful than relying on memory or hope.