How to Grow Hammer Coral

Hammer corals are one of the most beautiful corals known to man. Their colorful tips, multiple shapes and ultimately anemone like looks are all reasons to bring these home. With the right care, home aquariums can see their new hammers forming new heads. In the end that's what every coral owner loves. Growing corals. With that being said let's learn how to grow hammer coral!

Picking Your Hammer Coral

Just as "cat" is not an exact term, hammer coral covers a wide variety of genus. For simplicity sake we will discuss these as both wall and branching hammer corals. Remember your hammer coral placement will depend on which kind you get and how much you are starting with.

Wall hammer corals are more suited to those looking for slow controlled growth. Again with our emphasis being on growth I suggest you pick out a branching hammer coral. These grow by producing new heads. As each new head grows your coral will be able to grow even faster, making the coral growth exponential!

Hammer coral growth in 3 months

A few months of proper care will work wonders

So why can my hammer coral frag explode into a colony in just a few months? Lets find out right now.

Setting up Success

Hammer corals have a few conditions, ranging these from most important to least important gives us this list:

Feeding Hammer Corals

Despite their bubbly appearance, hammer corals are not sponges. They cannot grow through water and salt alone. Even reef salts with added nutrients can only help a fragment of what we are looking to do.

Again my tanks live and breathe from C-Balance as it provides the two main factors we need to control for optimal growth. Calcium and alkalinity.

First off, hammer corals will grow at a much higher rate when provided with higher calcium levels, sitting around the 400-420 ppm range. This is a major component of your hammer corals structure. Even the most powerful reef salts will only provide a small amount of calcium to your tank. This is why most owners will go years before seeing their first new head budding out of the corals.

Next on the list is raising your alkalinity to the 8-12 dKH range. This will make your coral much more comfortable and wiling to eat. Keeping this level high isn't too difficult, and raising your salinity, within reason, will allow your alkalinity levels to stay higher longer.

With the water set up perfectly, our corals will be slowly take in the nutrients in the water and begin their growth. As with human muscles, corals will not be able to grow much without being supplied excess nutrients. This can be done two ways, the second far more effective than the first.

Broadcast Feeding
This is how most owners go about feeding their fish. As food floats around the fish are free to swim and eat as they please. Corals are not fish and do not swim. With their much needed nutrients flying all over the tank, very little of it will land within the corals grasp. This is why we use:

Target Feeding
Using a variety of methods, we can put the food exactly where we need it. Lazy crabs, picky mandarins and unmoving corals can all benefit from target feeding. For my hammers I've taken to shutting off the power heads, sucking in thawed mysis shrimp into a turkey baster and very gently spraying the hammer with the shrimp. The corals can only eat so much, so please don't cover your single head of hammer coral in 50 shrimp. Just 1-3 per head will be far more than they would usually catch on a normal day. While this may seem like barely feeding your mind will change when your coral doubles and you have 10 hungry heads to feed. Clean out any excess food before turning your power head back on. Feeding is done.

Protecting Hammer Corals

You've likely noticed just how soft hammer corals are by now. While it is true they can go on the offensive with chemical attacks they do have predators. The most common culprit? Peppermint Shrimp.

Commonly used to fight algae and aiptasia, these hungry shrimp are no friend of soft, brainy corals. While they are registered as reef safe, they should be seen as "with caution". Their hard shells protect them from the corals chemical attacks, and the slow eating of the coral attracts the shrimp to steal food from the coral. This drastically slows your hammer corals growth.

When they get hungry and scout your hammer corals for food and come up empty handed, peppermint shrimp can resort to eating hammer coral! For this reason I urge you to banish any peppermint shrimp you may own to the sump or donate them to another tank. They are nothing but bad news for hammer coral.

That about does it for both wall and branching hammer coral care. Be sure your keep your water parameters safe for aquatic life. Keep the calcium levels up along with your alkalinity, Feed the corals and watch them take off. Pretty soon you'll need a fragging guide to split your coral and either sell it or start another body!