TSA Grafted Gamma Knife Hydnophora Coral

Name: TSA Grafted Gamma Knife Hydnophora Coral
Brand: TSA Coral
SKU: CTOXGraftedGammaKnife
Price: 119.99 USD
Availability: InStock

TSA Grafted Gamma Knife Hydnophora Coral

Beginner Corals Grafted

$119.99 $149.99

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Care Level Moderate

Lighting Moderate–High

Flow Moderate–High

Placement Mid–High

Temperament Aggressive stinger (keep 6–8 inches spacing)

Feeding photosynthetic (primary), microplankton, rotifers, cyclops copepods, baby brine shrimp nauplii, oyster eggs, powdered coral foods, marine snow

TSA Grafted Gamma Knife Hydnophora Coral FAQ's

Why does my Grafted Gamma Knife Hydnophora show uneven color or a fading graft line over time?

Dual-color grafts depend on two genetically distinct tissues staying healthy at their junction. Sudden alkalinity or temperature swings, shading, or tissue nicks at the seam can let one strain outcompete the other. Stabilize parameters (especially alkalinity), provide strong, turbulent flow around the seam, maintain moderate-high PAR with strong blue/UV, and avoid shading to preserve both colors.

What growth quirks should I expect from Hydnophora rigida in mixed SPS tanks?

It grows as rigid plates or short branches with raised hydnophores that can overtop neighbors. Expect fast lateral encrustment and self-shading that causes basal die-off if flow is weak. Give space—its sting outclasses many SPS and LPS. Use island rockwork, strong cross-flow to clear sediments, and periodically trim edges to prevent contact warfare.

My colony is browning or losing fluorescence—what’s the most likely cause?

Typically elevated nutrients paired with lower PAR or weak blue spectrum. Aim for stable, moderate nutrients (e.g., detectable nitrate and low phosphate), PAR in the upper-mid SPS range, and ample blue-violet output. Increase turbulent flow to reduce boundary layers and improve gas exchange. Avoid rapid nutrient stripping; step changes can trigger tissue recession in this species.

The base is receding despite good polyp extension—how do I stop the slow creep?

It’s often a flow and shading issue. Improve undercarriage flow with additional random streams, lift or angle the colony to open channels, and trim or relocate upper plates. Check for hidden detritus pockets and alk swings. A small perimeter cut (isolation margin) around the receding edge can halt spread while conditions are corrected.

Photo is of mother colony. Frags are typically ¾" – 1" in size.

The TSA Gamma Knife Hydnophora Coral is an eye-catching addition to any reef tank, featuring a neon green base and vibrant gold polyps. Each frag is approximately 1 inch in diameter. Please note, there may be a wait time when checking out, so we recommend selecting a shipping date at least a week or two in advance to ensure availability.

Placement:
Mount your coral using IC gel glue, putty, or a combination of both. Position it on a rock or ledge with direct lighting and strong water flow to help it thrive.

Feeding:
While the TSA Gamma Knife Hydnophora Coral doesn’t require direct feeding, it will benefit from the nutrients available in a well-maintained reef tank. For best results, broadcast feed a mixture of Zooplankton, Phytoplankton, Amino Acids, and other Organic Proteins with pumps off, allowing the coral to absorb what it needs.

Lighting & Flow:
For the best coloration, we recommend using an 18-20K color spectrum. This coral does best with moderate to high water flow and low to moderate lighting (PAR 150-250).

Quick Guide:

Care Level: Easy
Lighting: Low to moderate (PAR 150-250)
Water Flow: Moderate to high
Aggressiveness: Aggressive
Origin: Indo-Pacific, TSA aquacultured in Florida
Water Conditions: 75-80°F; sg 1.025-1.026; pH 8.1-8.4; Calcium 420-440 ppm; Alkalinity 8-9.5 dKH; Magnesium 1300-1450 ppm; Nitrates <10ppm; Phosphates <0.10ppm.

Top Shelf Aquatics Recommended Feeds:

All corals at Top Shelf Aquatics are grown under Ecotech Marine Radion XR30 lighting and powered by a mix of Ecotech Marine Vortech Pumps and Sicce Wave Makers to ensure the best growth conditions.