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How to care for Hammer Coral in a Reef Tank

Find out how to properly care for your new Hammer Coral with this "how-to" guide on the requirements for healthy Hammer Coral from the #1 place to buy corals online!

Read along to find out the Lighting, Water Flow, Feeding, Placement & more when it comes to the care of your new Hammer Coral

by scott Shiles • February 27, 2023

LPS Coral Care, All Corals

Hammer coral is a popular LPS addition to many reef tanks, thanks to its striking appearance and relatively easy care requirements. However, proper care is essential to ensure the health and longevity of these corals in your tank. In this blog, we will discuss some of the essential tips on how to care for hammer coral in a reef tank.


Hammer coral requires moderate to high lighting in your reef tank. These corals contain zooxanthellae, which are photosynthetic algae that require light to thrive. Provide at least 4-6 watts of lighting per gallon of water to ensure healthy growth of hammer coral.

Water Parameters

Keeping stable water parameters is essential for the health of hammer coral. Maintain a pH level between 8.1-8.4 and a temperature between 75-82°F. Additionally, keep the nitrate levels below 10 ppm and phosphate levels below 0.05 ppm to avoid algae growth.

Water Flow

Hammer coral needs moderate water flow in the reef tank to keep it healthy. A moderate water flow ensures the coral receives enough food and nutrients to maintain its health.


Hammer coral is a photosynthetic coral, meaning it derives the majority of its nutrients from the zooxanthellae. However, these corals also require supplemental feeding to maintain their health. Feed them small pieces of meaty foods such as brine shrimp, mysis shrimp, and zooplankton once a week.


Place hammer coral in an area with moderate to high lighting and moderate water flow. Ensure there is enough space around the coral to grow without interference from other corals.

Coral Compatibility

Hammer coral is generally peaceful and can coexist with most other corals in the reef tank. However, it can sting other corals if they come in contact, so ensure there is enough space between them.

Coral Fragging

Hammer coral is a fast-growing coral, and you may need to frag it occasionally to prevent it from overcrowding the tank. Use clean tools and ensure you frag only healthy coral to avoid spreading diseases.

Water Changes

Regular water changes are essential to keep the water clean and maintain stable water parameters. Change 10-20% of the tank water every two weeks to prevent the build-up of nitrates and other harmful chemicals.

In conclusion, hammer coral is an excellent addition to any reef tank, but proper care is essential to ensure its health and longevity. Maintain stable water parameters, provide adequate lighting and water flow, and feed the coral regularly. Place the coral in an area with enough space and avoid overcrowding. Finally, perform regular water changes to maintain a healthy environment for your hammer coral. With these tips, you can ensure your hammer coral thrives in your reef tank.

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