Black Hole Sun Blasto

Blastomussa sp

Saltwater Coral Species Group: Blastomussa Family: Mussidae

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Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

 pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

 NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

 NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

 PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

 NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

 Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

 KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

 Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

 SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

 ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Black Hole Sun Blasto

General information

In general, the Blastomussa corals has many small corallites that is usually swollen and round in shape. When the polyps are out,  the entire colony will look similar to a mushroom anemone.

For the Black Hole Sun Blasto, they are predominatly colored red with dark violet mouth. This are the water parameters for cultivating Black Hole Sun Blasto:

  • Calcium: 400 – 450 ppm
  • Alkalinity: 2.86 – 4.29 MEQ/L (8 – 12 dKH)
  • Phosphates: 0
  • Magnesium: 1200 – 1350
  • Strontium: 8 -10
  • Temperature: 72° – 78° F (22° – 26° C)
  • Salinity / Specific Gravity: 1.023 – 1.025
  • pH: 8.1 – 8.4

Diet & nutrition

The priamry nourishment of the Black Hole Sun Blasto is provided by the symbiotic zooxanthllae living within its tissues. But on top of this, we recommend you still do supplemental feeding by adding mysis or brine shrimp.

Determining sex

A mature tank is highly recommended in propagating Black Hole Sun Blasto. They need to be set at the bottom level of the tank.

Breeding & spawning

The Black Hole Sun Blasto requires moderate lighting and low water flow.

Origination

The Black Hole Sun Blasto can be found in the waters of the Indo-Pacific Ocean, particularly in Japan, Malaysia, Polynesia and Australia.

Cautions

You have nothing to worry about Black Hole Sun Blasto. They have a peaceful behaviour and do not attack even if there is a nearby coral.

Acclimation process

Black Hole Sun Blasto are a marine species. Therefore, salinity must be entirely maintained at 1.023 to 1.025 specific gravity.

All photos

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