Neon Green Hammer
Euphyllia ancora
Bright fluorescent green hammer coral with anemone-like branching heads. A striking centerpiece that pulses gently with tank flow.
- Lighting
- Medium
- Flow
- Medium
- Placement
- Mid rockwork, away from neighbors
- Temperament
- Semi-aggressive, sweeper tentacles
Out of stock — check back soon or join the restock list.
Care guide
Keeping Euphyllia in a reef tank
Hammer or anchor coral is named for the hammer-shaped tips on each tentacle. Euphyllia ancora grows on a wall-type skeleton — a continuous meandering ridge rather than separate branches — which means the colony expands as a spreading mass and cannot be fragged between heads the way a branching Euphyllia can.
Lighting for Neon Green Hammer
Moderate light is plenty, and this genus is easy to overdo. Under too much intensity the polyps stay tightly withdrawn and the tissue pales; under appropriate light they inflate well beyond the footprint of the skeleton. This particular frag is rated for medium light — roughly 100–200 PAR, around the middle of the rockwork.
Water flow
Gentle to moderate, indirect flow lets the polyps inflate fully. Strong direct current keeps them permanently deflated, and over time that suppressed extension shows up as stalled growth. Flow for this frag should be moderate and variable.
Placement and tank mates
Mid rockwork, away from neighbors. Semi-aggressive, sweeper tentacles.
What to watch for
Euphyllia deploy long sweeper tentacles after lights-out that reach well past their daytime footprint, so leave four to six inches to any non-Euphyllia neighbour. Brown jelly disease is the serious risk in this genus and moves fast — a colony showing it should be removed and dipped rather than watched.
