Acropora, Tenius, Milliepora & Montipora Coral Care | SPS Coral Guide

Acropora, Tenius, Milliepora & Montipora Coral Care Guide

Looking to master the art of keeping SPS corals? This guide covers essential care tips for Acropora, including Tenius and Milliepora varieties, as well as Montipora—some of the most popular Small Polyp Stony corals in the reefing world.

What Are Small Polyp Stony (SPS) Corals?

SPS corals are hard corals with tiny polyps and rigid calcium carbonate skeletons. They include species like Acropora and Montipora, known for their vibrant colors and intricate growth forms. These corals demand stable water conditions and are best suited for experienced reef keepers.

Popular SPS Coral Types

Acropora Tenius: Known for its vivid coloration and branching structure. Requires high light and strong flow.
Acropora Milliepora: Features fuzzy polyps and fast growth. Sensitive to parameter swings.
Montipora Capricornis: A plating coral that thrives in moderate to high light.
Montipora Digitata: A branching species that’s more forgiving than Acropora.

Ideal Tank Parameters

Lighting: High (200–400 PAR), especially for Acropora species
Water Flow: Strong, turbulent flow to prevent detritus buildup
Temperature: 75–78°F (24–26°C)
Salinity: 1.025–1.026 SG
pH: 8.1–8.4
Alkalinity: 8–9 dKH
Calcium: 420–450 ppm
Magnesium: 1300–1400 ppm
Nitrate: 2–10 ppm
Phosphate: 0.01–0.05 ppm

Placement Tips

Place Acropora and Montipora corals in areas with strong light and flow. Acropora should be positioned higher in the tank, while Montipora can tolerate slightly lower placement. Avoid shading and ensure room for growth.

Feeding & Nutrition

Though primarily photosynthetic, SPS corals benefit from supplemental feeding:

Phytoplankton and zooplankton
Coral amino acids
Target feeding 1–2 times per week

Growth & Fragging

Acropora and Montipora can be fragged using bone cutters or a coral saw. Ensure frags are placed in stable, high-flow areas and monitor for tissue recession or bleaching during recovery.

Common Challenges

RTN/STN: Rapid or slow tissue necrosis due to stress or instability
Bleaching: Caused by excessive light or parameter swings
Pest Infestations: Watch for Acropora-eating flatworms (AEFW) and nudibranchs

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