Tag: Natural calcium source

According to the National Institutes of Health, fish bones are a rich and natural source of calcium and phosphorus, confirming that yes, fishbone meal does have calcium. This slow-release fertilizer is a valuable organic byproduct, making it an excellent soil amendment for gardeners looking to improve plant and soil health.

Recent studies have shown that green mussel shells, often discarded as waste, can contain as much as 98.2% calcium carbonate by weight, proving that mussel shells have calcium in abundance. This fact highlights their potential as a valuable resource, offering both economic and environmental benefits through sustainable repurposing.