Marine Invertebrate

Sand Sifting Cucumber

Holothuria hilla

Care guide, husbandry, breeding, disease, sourcing, and tankmate intelligence on Sand Sifting Cucumber - written by the Fast Aquatics editorial team and cross-verified against vendor records on the live marketplace.

Sand Sifting Cucumber at a glance
Adult size: 8 inches · Minimum tank/pond: 55 gallons · Difficulty: intermediate · Diet: detritivore · Lifespan: 5-8 years.

Sand Sifting Cucumber (Holothuria hilla) is a marine invertebrate kept by aquarists for reef-tank cleanup, biological control of pests, or aesthetic display. Suitable for keepers with 6-12 months of experience and stable water chemistry.

Where Sand Sifting Cucumber comes from

Sand Sifting Cucumber (Holothuria hilla) is native to Indo-Pacific reef ecosystems, with wild populations distributed across coral reefs, sandy lagoons, and rocky tide pools. Captive specimens are typically wild-collected; some species are starting to be aquacultured but most Sand Sifting Cucumber sold today still comes from wild reef collection. Sustainable sourcing matters - look for vendors who can verify their collection practices, and consider aquacultured alternatives when available.

Sand Sifting Cucumber tank size and setup

Sand Sifting Cucumber requires a minimum of 55 gallons for healthy adults. The minimum is based on the species' adult size (8 inches), territorial range, and behavior pattern. Most Sand Sifting Cucumber sold at small juvenile size will reach full adult size within 12-24 months and the system must be sized to the adult, not the juvenile.

For a Sand Sifting Cucumber setup: mature reef tank with stable parameters, live rock for cover, sandbed substrate (1-2"), reef-grade lighting if photosynthetic, and a fully-cycled biological filter at least 6 weeks old. Newly-cycled tanks under 6 weeks crash the parameters that Sand Sifting Cucumber depends on.

Browse our 55-gallon aquarium guide for the complete equipment list.

Water parameters for Sand Sifting Cucumber

Sand Sifting Cucumber requires standard reef parameters held tightly stable:
Temperature: 76-80°F (24-27°C)
Specific gravity: 1.025 (refractometer-measured)
pH: 8.1-8.4
Alkalinity: 8-9 dKH
Calcium: 420-450 ppm
Magnesium: 1300-1400 ppm
Ammonia + nitrite: Both 0 ppm
Nitrate: Under 10 ppm
Copper: 0 (lethal to invertebrates)

Sand Sifting Cucumber is sensitive to copper - never medicate the display tank with copper if Sand Sifting Cucumber is present. Stable parameters beat perfect parameters.

What Sand Sifting Cucumber eats

Sand Sifting Cucumber is a detritivore. Eats uneaten food, fish waste, and biofilm. Generally finds enough food in a stocked tank without supplemental feeding. If population thins, drop in algae wafers or sinking pellets weekly. Feed Sand Sifting Cucumber appropriately for its size + activity level. Overfeeding is the #1 cause of water-quality crashes in tanks of all sizes.

Sand Sifting Cucumber tankmates and compatibility

Sand Sifting Cucumber is generally peaceful and compatible with most reef community species. Avoid keeping with predatory fish that view inverts as food: large wrasses (especially halichoeres + thalassoma), triggerfish, pufferfish, and certain large angelfish. Multiple Sand Sifting Cucumber can share a tank but compete for food.

Browse care guides for tankmate-compatibility tables for Sand Sifting Cucumber and similar species.

Sand Sifting Cucumber adult size and lifespan

Sand Sifting Cucumber reaches 8 inches at adulthood with a captive lifespan of 5-8 years with proper care. Many marine inverts molt periodically; provide adequate calcium and a stable parameter regime to support healthy molts.

Can you breed Sand Sifting Cucumber?

Sand Sifting Cucumber breeding in captivity ranges from straightforward (some shrimp, snails) to nearly impossible (most starfish, urchins) due to pelagic larval requirements. Captive-bred specimens are increasingly available from sustainable aquaculture facilities; check with vendors before assuming wild-caught origin.

Common Sand Sifting Cucumber diseases and problems

Sand Sifting Cucumber is sensitive to copper, ammonia spikes, low oxygen, and rapid parameter swings. NEVER use copper medications in a tank with Sand Sifting Cucumber. Symptoms of stress: reclusive behavior, color loss, refusal to feed, abnormal molting (incomplete or stuck molts). Most Sand Sifting Cucumber deaths trace back to acclimation shock or parameter mismatch - drip-acclimate over 45-60 minutes when adding to a new tank.

Where to buy Sand Sifting Cucumber online

Sand Sifting Cucumber is sold at LFS (local fish stores), online retailers, and direct from breeders/wholesalers. Pricing varies widely by source, size, and quality:

Budget tier: $15-60
Mid-tier: $30-150
Premium tier: $100-500

Browse live Sand Sifting Cucumber from vetted Fast Aquatics vendors with carrier-tracked overnight shipping (FedEx Priority + UPS Next Day), climate-aware hold logic, and a 4-hour DOA window with photo-evidence claims. Captive-bred or aquacultured specimens cost more upfront but arrive healthier and integrate faster.

Sand Sifting Cucumber FAQ

How big does Sand Sifting Cucumber get?

8 inches at adulthood within 12-24 months.

How long does Sand Sifting Cucumber live?

5-8 years with proper care.

What is the minimum tank/pond size?

55 gallons, with larger systems strongly recommended.

Is Sand Sifting Cucumber hard to keep?

Sand Sifting Cucumber is rated intermediate difficulty.

What does Sand Sifting Cucumber eat?

Sand Sifting Cucumber is a detritivore; appropriate diet matches its natural feeding pattern.

Where can I buy Sand Sifting Cucumber?

Browse live Sand Sifting Cucumber from vetted Fast Aquatics vendors with carrier-tracked Buyer Protection and a 4-hour DOA window.

How much does Sand Sifting Cucumber cost?

$15-500 depending on source and quality.

Do I need to quarantine Sand Sifting Cucumber?

Yes - quarantine new Sand Sifting Cucumber for 4-6 weeks in a separate tank before adding to your display.

Is Sand Sifting Cucumber reef safe?

Generally yes - Sand Sifting Cucumber is reef-safe and suitable for established reef tanks.

Other species in the same category with care profiles on Fast Aquatics. Click any name for the full husbandry breakdown.

Banded Coral ShrimpStenopus hispidusMultibar AngelfishLeft-Handed Hermit CrabCalcinus laevimanusHammer CoralDwarf OctopusOctopus mercatorisRhomboid Fairy Wrasse

Sources and references

Sand Sifting Cucumber taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.

Have a photo of Sand Sifting Cucumber?
Approved photos go live in 24 hours, with credit (or anonymous - your call).

More resources for Sand Sifting Cucumber keepers

Common diseases
Helpful calculators
Key terms

Browse the full disease database, calculator collection, aquarium glossary, or Q&A library for additional reference.

Deep-dive Q&A on Sand Sifting Cucumber

Answers to the questions experienced keepers ask after the basic care guide.

How long does Sand Sifting Cucumber take to acclimate to a new tank?

Drip acclimation over 60 to 90 minutes is the safest approach for Sand Sifting Cucumber. Match temperature first (15 minute float), then drip 2 to 3 drops per second from the display sump until the bag volume has tripled. Test salinity (or freshwater hardness) at the end - if it is within 0.001 SG (or 2 dGH) of the display, transfer the specimen with a net rather than pouring shipping water in.

What is the best filtration setup for Sand Sifting Cucumber?

Aim for biological + mechanical + chemical staging. Canister or sump-driven filtration sized for 5x to 8x display turnover per hour, mechanical floss replaced weekly, and carbon or GAC swapped every 4 to 6 weeks. Sand Sifting Cucumber responds well to stable nitrate (under 20 ppm) more than to any specific filter brand - stability beats peak performance.

Does Sand Sifting Cucumber need a protein skimmer?

For saltwater specimens, yes - a properly-sized skimmer rated for 1.5x to 2x display volume keeps dissolved organics low and reduces nuisance-algae triggers. Freshwater specimens do not need skimmers; a well-stocked plant grow-out + canister with chemical media achieves the same end. Sand Sifting Cucumber kept without adequate organic export tends to show stress within 90 days.

Can Sand Sifting Cucumber be kept in a planted tank?

Compatibility with planted tanks depends on the species behavior + water chemistry overlap. Plant-safe specimens leave foliage alone; some pick at soft-tissue plants like vallisneria or anubias. Check the species page profile + the planted-tank compatibility note before stocking Sand Sifting Cucumber in a high-tech CO2-injected setup with valuable cultivars.

What is the ideal lighting for Sand Sifting Cucumber?

For freshwater specimens with no plant requirements, a basic LED at 30 to 50 PAR at substrate is sufficient and reduces algae. For saltwater + reef specimens, target 100 to 250 PAR depending on photo-tolerance, with a sunrise/sunset ramp + a 8 to 10 hour photoperiod. Sand Sifting Cucumber tolerates a wider lighting band than most keepers expect; consistency matters more than peak intensity.

Does Sand Sifting Cucumber prefer high or low water flow?

Most aquarium species evolved in moderate flow with localized turbulence rather than uniform high flow. Aim for 20x to 40x display turnover for reef specimens, 4x to 6x for community freshwater. Sand Sifting Cucumber shows stress fins (clamped, frayed) when flow is mismatched - dial back if you see this within 14 days of introduction.

What temperature shift will stress Sand Sifting Cucumber?

Sustained drift above +/- 2 F from target is the threshold most keepers miss. Sand Sifting Cucumber tolerates day-night swings of 1 to 2 F without issue but a 4 F shift over 2 hours triggers ich + bacterial bloom risk. Use a controller-driven heater (not the built-in dial) and a backup thermometer at the opposite end of the tank.

What are the top 3 diseases that hit Sand Sifting Cucumber the most?

For freshwater fish: ich, columnaris, and fin rot are the top three; quarantine + UV sterilizer prevents the majority. For marine fish: ich (Cryptocaryon), velvet (Amyloodinium), and bacterial infections; tank-transfer method or copper QT during the 30-day acclimation cycle prevents nearly all outbreaks. For inverts + corals: tissue necrosis, parasitic isopods, and protozoan blooms.

Can Sand Sifting Cucumber be bred in captivity?

Captive breeding success varies enormously by species - some breed readily in community tanks (livebearers, cherry shrimp, clownfish) while others have never been captive-bred (most reef fish + most marine inverts). Check the species-specific care guide for the breeding-method note + larval-rearing protocol. Sand Sifting Cucumber kept in pairs or small groups often spawns even without intent if conditions are right.

What are the best tankmates to avoid for Sand Sifting Cucumber?

Avoid same-species rivals (especially male-male pairings for territorial species), known fin-nippers (tiger barbs, certain pufferfish), and anything that out-competes for food or out-grows the tank. Sand Sifting Cucumber also struggles with hyper-aggressive cichlids in freshwater and damselfish in saltwater - both will hold territory at the expense of every other tankmate.

Is Sand Sifting Cucumber safe to keep with cleaner shrimp or cleaner wrasses?

Most ornamental specimens accept cleaner shrimp + cleaner gobies; cleaner wrasses (Labroides) often die in captivity and are not recommended. Sand Sifting Cucumber kept with cleaner pairs typically benefits from parasite control + stress reduction, but verify the cleaner does not get eaten by checking the species size + temperament chart.

What is the realistic lifespan of Sand Sifting Cucumber with proper care?

Captive lifespan tracks closely to wild lifespan when water chemistry, diet, and tankmate stress are managed. Most aquarium fish live 5 to 12 years; long-lived species (large cichlids, pufferfish, some tangs) reach 15+ years. Sand Sifting Cucumber kept in a stable, properly-sized system should live within 80% to 100% of the species lifespan ceiling - early death usually traces back to chronic-stress causes (parameters, tankmates, diet) rather than disease.