Feeding corals is a key part of maintaining a thriving reef tank. Corals derive nutrients from both photosynthesis and direct feeding, but not all corals have the same needs. In this guide, we’ll break down the essentials of coral feeding, covering the types of corals that benefit from direct feeding, what to feed them, and how to ensure optimal growth and health.

Why is Coral Feeding Important?

Corals obtain a significant portion of their energy from photosynthesis via their symbiotic zooxanthellae. However, many species, especially LPS (Large Polyp Stony) corals and non-photosynthetic varieties, rely on additional feeding for growth and coloration.

Feeding your corals supplements their energy intake, allowing for faster growth, better color development, and overall health improvement. Knowing which species need more attention to feeding can help keep your reef tank balanced.

What Types of Corals Require Feeding?

While most corals can benefit from feeding, some require more nutrients than others. Here’s a breakdown:

• Photosynthetic Corals: These corals, like most soft corals and some LPS corals, primarily rely on light for energy. Examples include Zoanthids and Green Star Polyps, which don't need frequent direct feeding but will benefit from occasional nutrient boosts.

• Non-Photosynthetic Corals: Corals like Sun Corals and Gorgonians cannot produce energy from light and must be fed regularly. These species rely on plankton, meaty foods, and other supplements for sustenance.

• LPS Corals: Corals like Acanthastrea, Hammer, and Torch corals benefit from regular feedings of meaty foods like zooplankton, brine shrimp, or mysis shrimp.

• SPS Corals: Small Polyp Stony corals, such as Acropora, need fine particulate foods like phytoplankton or coral-specific liquid foods but are mostly dependent on strong lighting and stable water conditions.

What to Feed Your Corals?

• Phytoplankton: Ideal for filter-feeding corals like SPS corals.
• Zooplankton: Great for LPS corals and filter-feeders.
• Meaty Foods: Shrimp, fish eggs, and other fine particles work well for many LPS and non-photosynthetic corals.
• Liquid Coral Foods: Easy to administer and often contain a mix of nutrients for a variety of corals.

How Often Should You Feed Corals?

The frequency of feeding depends on the coral species. Non-photosynthetic corals should be fed multiple times per week, while photosynthetic corals with lower feeding needs might only require feeding once a week or even less. Always observe your tank's health to avoid overfeeding, which can cause nutrient spikes and algae growth.

Feeding Techniques and Best Practices

• Target Feeding: Use a turkey baster or pipette to feed individual corals, delivering food directly to their polyps. This minimizes waste and ensures that each coral gets enough.

• Broadcast Feeding: Spread food throughout the tank. This method works well for smaller particulate foods and corals that passively feed on suspended matter.

• Turn Off Pumps: When feeding corals, turning off your tank’s pumps ensures the food stays suspended longer, giving your corals time to capture it.

Signs Your Corals Are Well-Fed

Healthy corals will exhibit vibrant colors, expanded polyps, and consistent growth. If you notice your corals looking dull or not extending their polyps, they may require more frequent feedings or a different type of food.

Common Coral Feeding Mistakes to Avoid

1. Overfeeding: Excess food can lead to poor water quality, fueling algae growth and harming your corals.
2. Feeding the Wrong Foods: Different corals have different nutritional needs. Make sure to use appropriate-sized foods based on the species you’re caring for.
3. Ignoring Water Parameters: Even if you’re feeding your corals well, imbalanced water parameters can negate your efforts. Regular testing for nitrates, phosphates, and alkalinity is key.

Conclusion

Feeding your corals properly can significantly impact their growth, health, and coloration. By understanding their nutritional needs and feeding practices, you’ll foster a thriving reef ecosystem. At SaltCritters, we offer a wide range of coral. Browse our coral collection to get started!