Calcium supports exoskeleton growth and successful molts. The simplest approach is to keep a clean source available at all times and let the colony regulate its intake rather than adding a large dose on feeding day.
Cuttlebone
Plain cuttlebone is easy to monitor, lasts well, and gives the colony a solid surface to rasp. Break it into smaller pieces and place one near the damp-to-dry transition. Replace it if it becomes fouled or buried in wet food.
Prepared eggshell
Eggshell can be inexpensive, but preparation matters. Rinse it, remove remaining egg material, heat it as part of normal food-safe preparation, dry it thoroughly, and crush it. Do not place raw, food-soiled shell into a warm humid bin.
Calcium powders
A small pinch on a dry feeding surface is easier to manage than dusting the whole enclosure. Heavy powder can cake when wet and makes it difficult to see how much is being used. Choose plain products without added flavors or medications.
Use more than one placement point
Large cultures benefit from calcium in two locations so juveniles and shy animals are not forced into one crowded feeding area. Availability matters more than creating a thick layer.
Quick checklist
- Plain calcium source
- Available continuously
- Kept away from wet leftovers
- Replaced when dirty or depleted
Find colony staples in Care & Nutrition and pair calcium with a leaf-first diet.
