TSA Grafted Gamma Knife Hydnophora Coral

TSA Grafted Gamma Knife Hydnophora Coral

$179.99
Sale price  $179.99 Regular price  $199.99
Skip to product information
TSA Grafted Gamma Knife Hydnophora Coral

TSA Grafted Gamma Knife Hydnophora Coral

$179.99
Sale price  $179.99 Regular price  $199.99
SAVE $20

Grow your corals with:

5-Day Guarantee

Reef Guard Covered

Ships Overnight

FedEx Priority

Expert Support

We've got your back!

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.
Description
WYSIWYG – you will receive the exact piece shown. Eggcrate is half inch. If second image is present it's of the mother colony.

WYSIWYG – you will receive the exact piece shown. Eggcrate is half inch.

Price Match Guarantee We match verified competitor prices.
Looking for something specific? Tell us what you need.
SKU: INSTORE_BLUE_H70.071426

Related items

Inverts ship FREE with Corals

View all
Clean Up Crew Invertebrate Pack – Algae Control

Clean Up Crew Invertebrate Pack – Algae Control

Clean Up Crew Invertebrate Pack – Algae Control

$34.99
Sale price  $34.99 Regular price  $33.88
Clean Up Crew Invertebrate Pack – Sand Cleaners

Clean Up Crew Invertebrate Pack – Sand Cleaners

Clean Up Crew Invertebrate Pack – Sand Cleaners

$44.99
Sale price  $44.99 Regular price 
Clean Up Crew Invertebrate Pack – Full Arsenal

Clean Up Crew Invertebrate Pack – Full Arsenal

Clean Up Crew Invertebrate Pack – Full Arsenal

$79.99
Sale price  $79.99 Regular price  $85.83
Nassarius Snail

Nassarius Snail

Nassarius Snail

$3.99
Sale price  $3.99 Regular price 
Skunk Cleaner Shrimp

Skunk Cleaner Shrimp

Skunk Cleaner Shrimp

$49.99
Sale price  $49.99 Regular price 
Tiger Sand Conch

Tiger Sand Conch

Tiger Sand Conch

$14.99
Sale price  $14.99 Regular price 
Astrea Snail

Astrea Snail

Astrea Snail

$2.49
Sale price  $2.49 Regular price 
Emerald Crab

Emerald Crab

Emerald Crab

$7.99
Sale price  $7.99 Regular price 

These items ship FREE with Corals

View all
Green Seaweed - Premium Nori - Reef Genetics

Green Seaweed - Premium Nori - Reef Genetics

Green Seaweed - Premium Nori - Reef Genetics

$7.19
Sale price  $7.19 Regular price  $8.99
Reef Glue - Reef Genetics

Reef Glue - Reef Genetics

Reef Glue - Reef Genetics

$2.39
Sale price  $2.39 Regular price  $2.99
Phosphate Ultra-Low Range Checker - Colorimeter - Hanna Instruments

Phosphate Ultra-Low Range Checker - Colorimeter - Hanna Instruments

Phosphate Ultra-Low Range Checker - Colorimeter - Hanna Instruments

$74.99
Sale price  $74.99 Regular price 
Chemi-Pure Blue - Boyd Enterprises

Chemi-Pure Blue - Boyd Enterprises

Chemi-Pure Blue - Boyd Enterprises

$2.95
Sale price  $2.95 Regular price  $2.95
Chemi-Pure Elite - Boyd Enterprises

Chemi-Pure Elite - Boyd Enterprises

Chemi-Pure Elite - Boyd Enterprises

$10.89
Sale price  $10.89 Regular price  $10.89
Reefer Madness UV Reactive T-Shirt

Reefer Madness UV Reactive T-Shirt

Reefer Madness UV Reactive T-Shirt

$34.99
Sale price  $34.99 Regular price 
TSA Mini Logo Hat

TSA Mini Logo Hat

TSA Mini Logo Hat

$34.99
Sale price  $34.99 Regular price 
Zesty Bites (Sour Candy) - Zesty Snacks

Zesty Bites (Sour Candy) - Zesty Snacks

Zesty Bites (Sour Candy) - Zesty Snacks

$6.99
Sale price  $6.99 Regular price