Euphyllia Frogspawn Torch Hammer Comparison: Care Differences

Walk into any Singapore reef shop and you will find the same three corals dominating the LPS tubs: frogspawn, hammer and torch. All three are Euphyllia, all three look vaguely similar at a glance, yet they behave differently enough that lumping them together causes the most common reef tragedies on the island. This euphyllia frogspawn torch hammer comparison from Gensou Aquascaping at 5 Everton Park breaks down the practical care differences that matter on a working SPS/LPS mixed reef. Expect specifics on flow preference, tentacle reach and the placement maths that keeps each coral extended day after day.

Quick Species ID

Frogspawn (Euphyllia divisa) has bifurcated tentacle tips that look like clusters of eggs, hence the common name. Hammer coral (Euphyllia ancora) shows anchor or T-shaped tips, blunt and rounded. Torch (Euphyllia glabrescens) shoots long straight tentacles terminating in a single glowing bulb. The trio also differs skeletally: frogspawn and hammer are typically wall or branching skeletons, while torch forms phaceloid clusters of individual corallites.

Flow Requirements Side by Side

Torch is the fussiest of the three. Give it medium-low, indirect flow of 20-30x turnover across the polyp or the flesh retracts into a golf ball. Frogspawn tolerates a surprisingly wide band from low to medium-high, which is why it survives beginner mistakes better than its siblings. Hammer sits in the middle, happy with gentle random flow from a nano gyre. If you see the tentacles bending 45 degrees or pinning flat against the skeleton, the flow is too harsh regardless of species.

Lighting Sweet Spots

All three prefer PAR between 100 and 200 at colour temperatures around 14-20K. Frogspawn colours deepest under the bluer end. Torch shows the broadest PAR tolerance, with wild-caught Indo torches handling up to 250 PAR once acclimatised. Hammers can bleach above 180 PAR on a newly imported frag; drop it to the sand bed for two weeks under an acclimation shade before promoting it onto the rockwork.

Aggression and Sweeper Tentacles

This is the single most important care difference. Torch has the longest sweepers, reaching up to 15 cm at night and stinging almost anything non-Euphyllia. Frogspawn sweepers extend 5-8 cm, hammer roughly 4-6 cm. Same-genus Euphyllia generally tolerate each other, but cross-genus contact with Duncans, Acans or SPS colonies causes tissue necrosis within days. Our torch coral euphyllia care guide spells out the buffer zones we use in display builds.

Feeding Response Differences

Hammer accepts small meaty foods readily; mysis, finely chopped shrimp and reef roids land on the oral disc and are pulled in within minutes. Frogspawn responds similarly but sometimes needs the lights dimmed before tentacles open fully for a target feed. Torch is the slowest to feed, often ignoring food unless flow is reduced to near zero and the piece is held against a polyp for thirty seconds. Feed once or twice weekly; more often leads to detritus under the skeleton.

Placement Strategy on the Reef

Build a Euphyllia wall on one side of the tank, leaving at least 15 cm buffer before any other coral. Torch goes deepest or highest where flow is calmest and sweepers can extend without hitting a neighbour. Frogspawn slots next, hammer at the edge where accidental contact with softies is least damaging. This mirrors the placement logic in our best lps corals for beginners ranked piece, which rates frogspawn top of the beginner list.

Water Chemistry Sensitivity

None of the three are fussy, but torch reacts first to alkalinity swings. Keep dKH stable within a 0.5 band, calcium 420-440 ppm and magnesium 1350-1400 ppm. A sudden drop after a skipped two-part dose will turn torch polyps brown and recessed within 24 hours. Hammer and frogspawn recover faster but still resent swings. Our reef alkalinity crash recovery guide covers the rescue steps worth bookmarking.

Pests and Disease Susceptibility

Brown jelly disease hits all three but torch dies fastest once infected; within 48 hours a whole colony can liquefy. Dip every new Euphyllia frag in Bayer or CoralRx for 10 minutes before introduction. Flatworms rarely affect Euphyllia, but bristle worms can irritate retracted polyps overnight; a quick glance with a torch at 2300h tells you whether the tank has an overpopulation problem.

Pricing in Singapore

Torches carry the biggest premium. A WYSIWYG Indo gold torch runs $120-250 for a three-head frag at Singapore shops in 2026, while frogspawn heads sit around $25-45 each and hammers $30-60. Gold hammer and branching frogspawn are the outliers that trade closer to torch pricing. Shopee and Carousell sellers occasionally undercut retail but skip the acclimation support and quality control that justifies brick-and-mortar prices.

Propagation Ease

Frogspawn and hammer frag readily using a bone cutter or rotary saw, with cuts healing in 4-6 weeks under normal flow. Torch is a different animal; phaceloid clusters require severing individual corallites at the base, which triggers stress brown-out on the whole parent colony. See our how to frag lps corals euphyllia walkthrough for the blade technique and recovery timeline.

Which Should You Buy First

For a reef under six months old, start with frogspawn. It forgives flow mistakes, tolerates wider PAR and signals stress early enough to correct before death. Add a hammer after the tank has held steady parameters for three months. Save torch until the year mark when alkalinity dosing is automated and flow is properly mapped. Rushing the order is the top reason reefers lose a $200 torch frag within six weeks.

Related Reading

• Torch Coral Euphyllia Care Guide
• Frogspawn Coral Euphyllia Divisa Care
• Hammer Coral Euphyllia Care Guide
• Best LPS Corals for Beginners Ranked
• Reef Alkalinity Crash Recovery Guide