SKU: 87667049407

Horn Hard Coral Hydnophora Sp

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Description

Horn Hard Coral Hydnophora SpHorn Hard Coral (Hydnophora sp.)(Also known as Horn Coral, Branching Horn Coral, or Knob Coral) OverviewThe Horn Hard Coral (Hydnophora sp.) is a striking small polyp stony (SPS) coral, instantly recognisable by its horn like branches and distinctive, raised polyp ridges that create a textured, sculptural appearance. Typically bright green, yellow green, or teal, this coral exhibits intense fluorescence under blue or actinic lighting. While hardy and

Horn Hard Coral (Hydnophora sp.)

(Also known as Horn Coral, Branching Horn Coral, or Knob Coral)

Overview

The Horn Hard Coral (Hydnophora sp.) is a striking small-polyp stony (SPS) coral, instantly recognisable by its horn-like branches and distinctive, raised polyp ridges that create a textured, sculptural appearance. Typically bright green, yellow-green, or teal, this coral exhibits intense fluorescence under blue or actinic lighting. While hardy and fast-growing under stable conditions, Hydnophora is highly aggressive toward nearby corals and requires thoughtful placement. Its branching or encrusting growth patterns make it a bold, architectural addition to established reef aquariums.

Origin

Native to the Indo-Pacific region, including the Great Barrier Reef, Coral Sea, Fiji, Tonga, Indonesia, and the Red Sea. Found in shallow reef slopes and outer reef crests, where it receives strong light and vigorous water movement.

Feeding

The Horn Coral is photosynthetic, deriving most of its energy from zooxanthellae living within its tissue. It also benefits from supplemental feeding to boost growth and colouration. Feed 1–2 times per week with:

  • Microplankton or marine snow
  • Finely powdered coral foods
  • Phytoplankton or SPS-targeted coral blends

Feed during periods of moderate flow so fine foods can settle gently over the coral surface.

Lighting

Moderate to high lighting.Hydnophora thrives in bright light conditions provided by LED, T5, or metal halidesystems.

  • PAR range: 200–350 ¬µmol/m¬≤/s
  • Gradually acclimate to intense lighting to prevent bleaching.
  • Blue-spectrum lighting enhances fluorescence and contrast along the polyp ridges.
Water Flow

Moderate to strong, turbulent flow. This coral benefits from alternating current patterns that keep surfaces clean and encourage polyp extension. Avoid direct, laminar jets that could cause tissue erosion.

Placement
  • Place on mid to upper rockwork where it receives strong, indirect light and good flow.
  • Provide 15–20 cm (6–8 inches) of space from neighbouring corals — Hydnophora is extremely aggressive and will extend long, stinging sweeper tentacles that can kill nearby species.
  • Ensure rockwork is secure, as rapid encrusting growth can attach firmly to surfaces.
Tank Mates

Reef safe with caution. Compatible with:

  • Peaceful reef fish (clownfish, tangs, gobies, wrasses, etc.)
  • Invertebrates such as snails, shrimp, and hermit crabs
  • Other SPS corals at a safe distance

Avoid:

  • LPS or soft corals nearby (they will be stung and damaged)
  • Aggressive or stinging species in close proximity (e.g., Galaxea, Euphyllia)
  • Large angelfish or butterflyfish that may pick at coral tissue
Aggression

Highly aggressive.Hydnophora possesses powerful stinging tentacles and can cause severe tissue necrosis in nearby corals. Keep it isolated or in a dedicated section of the reefscape.

Experience Level

Intermediate to advanced. The Horn Coral is durable and fast-growing but requires stable water chemistry and careful spatial management due to its aggression. Suitable for aquarists experienced with SPS or mixed coral systems.

Water Parameters
  • Temperature: 24–27°C (75–81°F)
  • pH: 8.1–8.4
  • Salinity: 1.024–1.026 SG
  • Alkalinity (dKH): 8–12
  • Calcium: 400–450 ppm
  • Magnesium: 1250–1350 ppm
  • Nitrate: <5 ppm
  • Phosphate: <0.03 ppm
  • Tank Size: Minimum 150 litres (40 gallons); larger systems preferred for stable chemistry and spacing

Stable calcium, alkalinity, and nutrient levels are critical for skeletal strength and vibrant colouration.

Reef Compatibility

Reef safe with caution. The Horn Hard Coral adds dramatic shape and fluorescence to SPS or mixed reefs but must be placed with ample space to prevent damage to nearby species. Its aggressive nature makes it best suited as a solitary showpiece coral in the upper reef structure, where it can grow freely and display its natural brilliance

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SKU: 87667049407

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4.7 ★★★★★
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S
Super Duper
Lowell, US
★★★★★ 3
Not as good as the oem accessories
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
I have a roborock saros 10r and all of these accessories seem to be compatible and work with my robovac however the quality of them isn’t nearly the same level. The mop pads material are much coarser and less fine than the original. The side brushed bristles weren’t nearly as tightly bound together. The roller brush isn’t as well made. The cleaning performance I think is similar but i suspect they will not last as long as the oem accessories which are just much better made. Over it’s a mix on value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
E
Ed
Battle Creek, US
★★★★★ 5
All the parts needed to maintain your Roborock robot, with a great fit and finish.
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
This is a great consumable parts replacement package for many Roborock robots. I utilized it for my Saros 10R. The parts all fit great and honestly look and feel just like the OEM parts that came with the robot. Over time, I have purchased new consumable parts for my Saros 10R from various sources, but I think that I will be using this kit in the future. The kit comes with everything one needs to maintain Roborock robots, as outlined in its description. The main brushes are of good quality and fit well. I have found that the main brushes and the filter fit are the hardest things for third-party vendors to duplicate, and these do that well. What I like most is the mop heads. They are of very good quality and may be better than the OEM mop heads. Everything in this kit fits well and mimics the manufacturer's parts closely in both quality and fit. Compared to the cost of Roborock OEM parts, this is a home run.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
E
Emiran
Charlottesville, US
★★★★★ 4
Nice Value Replacement Kit for the Qrevo CurvX, Brushes Slightly Less Dense Than OEM
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
All of the included items fit my Roborock Qrevo CurvX nicely, and the material quality is fairly close to the OEM parts. I also liked the quantity of each item included, since it should be quite a while before I need to buy another replacement kit. The only downside I noticed was that the main roller brushes have about 1/4 fewer bristles than the OEM versions, so they don't seem quite as dense. Other than that, everything fits as expected and the kit seems like a solid value for maintaining the CurvX.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
C
caleb downing
Alexandria, US
★★★★★ 5
Reliable Replacement Parts That Work Well
Color: Saros 10r-20/Qrevo Curvx Accessories
These replacement parts have worked very well with our machine so far. The fit was accurate, installation was straightforward, and everything lined up the way it should without needing any adjustments. Performance has been just as good as the original parts we were replacing. Once installed, the machine operated normally, and I haven’t noticed any issues with function or compatibility during regular use. Overall, this is a dependable set of replacement parts to keep on hand for routine maintenance or unexpected breakdowns. Having extras available makes repairs a lot easier when something eventually wears out or needs to be swapped.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
A
Amazon Customer
Lowell, US
★★★★★ 5
Solid replacement kit for the Roborock Saros - everything you need in one pack
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
Everything in this kit fits my Roborock Saros without any issues. The main brushes, side brushes, mop pads, filters, and dust bags all installed the same way as the originals, and nothing felt loose or off. The kit comes with a lot of parts too, so I have plenty of spares to work through before needing to reorder anything. The quality on the individual pieces looks good. The main brushes feel solid and the rubber fins on them look well formed. The mop pads have a dense microfiber texture on one side and a rougher scrubbing surface on the other, and they feel comparable to the OEM pads. The dust bags are the sealed filter bag style with the gray plastic collar, same as the stock ones, and the filters look like they have the same fine media as the originals. Overall this is a good replacement kit if you have one of the compatible Saros models and want to stock up on all your consumables at once.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

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