What Is a Goniopora Coral?
Goniopora, commonly called the Flowerpot Coral, is a large polyp stony (LPS) coral that produces dozens of long, flowing polyps that extend dramatically from a hard calcium carbonate skeleton. Each polyp is tipped with a small mouth surrounded by 24 tentacles, giving a fully extended Goniopora the appearance of a field of flowers swaying in a breeze — hence the nickname.
Goniopora have historically had a reputation as difficult corals, but modern reef-keeping practices — particularly better understanding of their feeding needs — have made them much more achievable for intermediate reefers. At Lakeside Reefing, we carry a range of Goniopora morphs, from classic reds and pinks to rare greens and purples.
Goniopora vs. Alveopora: What's the Difference?
Goniopora and Alveopora look nearly identical and are often confused. The easiest way to tell them apart: count the tentacles on each polyp tip.
- Goniopora: 24 tentacles per polyp
- Alveopora: 12 tentacles per polyp
Alveopora are generally considered hardier and easier to keep. If you're new to flowerpot-style corals, Alveopora is a great starting point.
Water Parameters
Goniopora prefer stable, moderately nutrient-rich water:
- Temperature: 76–80°F (24–27°C)
- Salinity: 1.025–1.026
- pH: 8.1–8.3
- Alkalinity (dKH): 8–10 dKH — stability is critical
- Calcium: 400–450 ppm
- Magnesium: 1350–1500 ppm
- Nitrate: 5–20 ppm — Goniopora do not thrive in ultra-low nutrient systems
- Phosphate: 0.05–0.1 ppm
Ultra-low nutrient systems (ULNS) are one of the most common reasons Goniopora slowly decline. They need a moderate nutrient load to fuel their active polyp extension and feeding response.
Lighting
Goniopora are adaptable but generally prefer low to moderate lighting:
- Ideal PAR: 50–150 PAR
- Placement: Lower half of the tank, sandbed to mid-rock
- Spectrum: Blues enhance the fluorescent colors many morphs display; whites show natural pink, red, and green tones
As with all new corals, start Goniopora low and acclimate slowly. High PAR can cause polyp retraction and bleaching. A Goniopora that's happy with its light will have fully extended polyps for most of the day.
Flow
Goniopora need gentle, indirect, random flow:
- Polyps should sway and dance gently — not be blown flat or whipping around
- Direct, high-velocity flow will cause chronic retraction and stress
- Wavemakers on random or alternating modes are ideal
- Placing them slightly behind rockwork to break up direct flow works well
A Goniopora with fully extended, gently swaying polyps is a happy Goniopora. If polyps are consistently short or retracted, flow is the first thing to check.
Feeding: The Key to Long-Term Success
This is where Goniopora care differs most from other LPS — and where most failures happen. Goniopora are active planktivores that need regular feeding to thrive long-term. Their zooxanthellae provide some energy, but it's not enough on its own.
- Target feed 3–5 times per week with small, meaty foods
- Best foods: Reef Roids, Coral Frenzy, oyster eggs, copepods, baby brine shrimp, or phytoplankton
- Particle size matters — Goniopora have small mouths; use fine-particle foods or blend larger foods
- Turn off flow for 15–20 minutes after feeding
- Broadcast feeding (adding food to the water column) works well since their polyps are designed to capture drifting particles
Pro tip: A Goniopora that's fed regularly will have noticeably longer, more extended polyps and will grow significantly faster than one that relies on light alone.
Placement
- Give Goniopora plenty of room — fully extended polyps can reach 4–6 inches beyond the skeleton
- Keep away from aggressive neighbors like Torch Corals, Hammers, and other corals with sweeper tentacles
- Goniopora themselves have limited aggression but their extended polyps can contact and irritate nearby corals
- Placing them on the sandbed or on a low rock with open space around them works well
Common Problems and Solutions
- Polyps not extending: The most common complaint. Check flow (too high?), lighting (too intense?), nutrients (too low?), and feeding frequency. Also check for pests or fish nipping at the polyps.
- Slow decline over months: Almost always a feeding issue. Goniopora that aren't fed regularly will slowly shrink and recede. Increase feeding frequency immediately.
- Tissue recession: Check alk stability first. Also inspect for pests and physical damage.
- Bleaching: Too much light or a sudden parameter change. Move to a shadier spot and stabilize water chemistry.
- Skeleton exposed at the base: A sign of recession — increase feeding, check parameters, and consider fragging above the recession line if it's spreading.
Preparing New Arrivals
As with all new corals, we recommend getting Goniopora out of shipping water immediately and into a gentle potassium chloride dip for 10–15 minutes. Inspect carefully for pests, rinse, and place in a low-flow, low-light area of your tank to settle in. Read our full protocol: How to Prepare New Corals.
Shop Goniopora at Lakeside Reefing
We carry a hand-selected range of Goniopora corals — from classic red and pink morphs to rare greens and purples. Stock changes regularly as we source new pieces.