Beginner Reef Coral Guide
How to Successfully Start Keeping Corals
Starting a reef aquarium is one of the most exciting steps in marine aquarium keeping. Corals add movement, color, and biological complexity to a reef tank, but beginners often worry that corals are difficult to keep.
The good news is that many coral species are extremely hardy and well suited for beginner reef aquariums.
This guide explains:
-
which corals are easiest to keep
-
what conditions corals need
-
how to place corals in a reef tank
-
how to acclimate new coral frags
What Are Corals?
Corals are marine animals that live in colonies and build calcium skeletons. In reef aquariums they form the foundation of a living reef ecosystem.
Most reef corals live in symbiosis with microscopic algae called zooxanthellae, which provide energy through photosynthesis.
Because of this relationship, corals require proper lighting and stable water conditions to thrive.
Types of Corals in Reef Aquariums
Corals used in reef aquariums are generally divided into three main groups.
Soft Corals
Soft corals do not build rigid calcium skeletons.
Examples include:
-
Zoanthus
-
Mushroom corals
-
Xenia
-
Kenya tree coral
Soft corals are often the easiest to keep and are highly recommended for beginner reef tanks.
LPS Corals (Large Polyp Stony)
LPS corals have large fleshy polyps and calcium skeletons.
Examples:
-
Euphyllia (Torch, Hammer, Frogspawn)
-
Acanthastrea
-
Favia
These corals usually prefer moderate lighting and moderate water flow.
SPS Corals (Small Polyp Stony)
SPS corals have small polyps and rigid skeletons.
Examples:
-
Acropora
-
Montipora
These corals require stronger lighting and very stable water parameters, making them more suitable for advanced reef aquariums.
Best Beginner Corals
The following coral species are widely considered beginner-friendly because they tolerate minor fluctuations in aquarium conditions.
Zoanthus
Zoanthids are one of the most popular beginner corals. They grow quickly and adapt well to different lighting conditions.
Mushroom Corals
Mushroom corals are extremely hardy and can survive even in lower lighting.
Green Star Polyps
GSP are fast-growing and very tolerant, making them ideal for new reef aquariums.
Kenya Tree Coral
This coral grows rapidly and adapts easily to new environments.
Ideal Water Parameters for Beginner Corals
Stable water parameters are the most important factor for coral health.
Recommended conditions include:
Temperature: 23–25°C
Nitrates: 5–10 mg/L
Phosphates: 0.07–0.10 mg/L
Maintaining stable nutrient levels is essential, as sudden drops in phosphates or nitrates can stress corals and cause decline.
Lighting Requirements
Lighting intensity plays a major role in coral health.
Soft corals usually prefer:
-
moderate lighting
-
stable light cycles
More demanding corals such as SPS may require high PAR lighting levels.
A balanced full spectrum light source is generally recommended for reef aquariums.
Coral Placement in the Aquarium
A reef aquarium can be divided into several zones based on light intensity and water flow.
Top of the tank
High light and strong flow.
Suitable for SPS corals.
Middle zone
Moderate lighting and flow.
Suitable for many LPS corals.
Bottom of the tank
Lower lighting and gentle flow.
Ideal for soft corals such as mushrooms and zoanthids.
How to Acclimate New Corals
After receiving new coral frags, proper acclimation is critical.
Most corals require several days to fully adjust to the new environment. During this time they gradually expand their polyps and begin normal metabolic activity.
Basic acclimation steps:
-
Float the bag to equalize temperature
-
Slowly mix aquarium water with the transport water
-
Place the coral in a lower light area initially
-
Gradually move it to its final position
Signs of Healthy Corals
Healthy corals typically show:
-
extended polyps
-
vibrant coloration
-
slightly inflated tissue
These signs indicate that the coral is comfortable with the aquarium conditions.
Signs of Coral Stress
Corals may experience stress if water parameters change suddenly.
Warning signs include:
-
closed polyps
-
dull coloration
-
tissue recession
Stable water chemistry is the most important factor for coral health.
Start Your Reef With ReefExclusive
At ReefExclusive we specialize in healthy coral frags suitable for reef aquariums of all levels.
Our store offers:
-
beginner-friendly corals
-
carefully shipped coral frags
-
expert reef aquarium knowledge
Explore our coral collection and begin building your reef today.
Return to the main knowledge center: Reef Knowledge
