Letter Grade 4.0 Point Scale (+/-) A+: 4.0: A: 4.0: A-3.7: B+: 3.3: B: 3.0: B-2.7: C+: 2.3: C: 2.0: C-1.7: D+: 1.3: D: 1.0: D-0.7: F: 0.0
Coral calcium is a salt of calcium derived from fossilized coral reefs (primarily from limestone and coastal deposits).It has been promoted as an alternative, but unsubstantiated, treatment or cure for a number of health conditions.oral calcium is a source of calcium, which is an essential mineral for human life. Coral has a chemical structure that is very similar to the composition of human bone and is sometimes used as material in bone grafts.
Physical Description: Euphyllia paradivisa, also known by the common name frogspawn coral, is a popular coral for many aquarists, novice and experienced alike. The frogspawn is a large polyp stony coral (LPS), a coral with a calcium skeleton and large polyps or tentacles that grow from the calcium base. This coral has several color variations such as green and pink, pink and gold, gold and green. The color combinations are often very striking.