Invader Zim Chalice

About this coral

Invader Zim Chalice is a chalice coral in the aquarium trade LPS grouping “chalice,” which refers to multiple coral genera sold under the common name rather than one single scientific species. In practice, this coral is sought for its distinctive “chalice” growth form and polyp display, making it a standout centerpiece LPS coral when placed appropriately and maintained in stable reef conditions.

Features:

• Care is generally considered moderate for LPS-style chalice corals, with success tied to stable water chemistry and gradual acclimation.
• Provide indirect/moderate lighting and gentle, non-blasting water movement to help prevent tissue stress.
• Feed when polyps are receptive; many chalice keepers use appropriately sized meaty foods (for example, mysis or finely prepared seafood) and/or LPS coral foods.
• Give the coral secure placement on rockwork where it has space around the polyps, since nearby contact or instability can increase stress.
• Maintain consistent alkalinity, calcium, and magnesium so the coral can calcify properly over time.
• Aim for overall reef stability (avoid large swings in temperature, salinity, pH, or lighting intensity).

Specifications:

• Coral type: LPS (chalice trade grouping)
• Light (guidance): Moderate light; avoid strong direct lighting on the polyps
• Water flow (guidance): Indirect flow/gentle movement; avoid direct blasts
• Temperature: 72–78°F
• pH: 8.1–8.4
• Salinity (specific gravity): 1.023–1.025
• Alkalinity: 8–12 dKH
• Calcium: 400–450 ppm
• Magnesium: 1250–1350 ppm