Pond Species

Lotus

Nelumbo nucifera

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

Lotus at a glance
Adult size: 48 inch height · Minimum tank/pond: 500 gallons (pond) · Difficulty: intermediate · Diet: photosynthetic · Lifespan: perennial years.

Lotus (Nelumbo nucifera) is a pond species kept by aquarists for outdoor pond stocking. Suitable for keepers with 6-12 months of experience and stable water chemistry.

Where Lotus comes from

Lotus (Nelumbo nucifera) is a hardy aquatic plant suited to outdoor pond environments. Naturally found in slow-moving waters, marshes, and pond margins across temperate and tropical zones. Used in ornamental pond design for visual interest, biological filtration, and providing cover for fish.

Lotus tank size and setup

Lotus requires a minimum of 500 gallons (pond) for healthy adults. The minimum is based on the species' adult size (48 inch height), territorial range, and behavior pattern. Most Lotus 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 Lotus setup: outdoor pond with appropriate depth (3+ feet for cold-climate winterization), filtration sized 1.5-2x pond volume per hour, UV clarifier for green-water control, surface skimmer for leaf litter, and either a bottom drain or annual full cleanout.

Browse our 120-gallon aquarium guide for the complete equipment list.

Water parameters for Lotus

Lotus prefers pond parameters appropriate to your climate zone:
Temperature: 50-78°F seasonal swing acceptable for cold-tolerant species; tropical pond species need 70°F+ year-round.
pH: 7.0-8.5
Ammonia + nitrite: Both 0 ppm
Nitrate: Under 40 ppm in established ponds
Dissolved oxygen: 5+ mg/L (aerator non-optional in summer)

Pond water chemistry shifts with rainfall, leaf decay, and bioload. Test biweekly during active season; perform 10-25% water changes monthly to maintain stable parameters.

What Lotus eats

Lotus is a photosynthetic. Powered primarily by photosynthesis through symbiotic zooxanthellae living in the tissue. Supplemental feeding of reef foods supports faster growth but is optional once light + parameters are dialed in. Feed Lotus appropriately for its size + activity level. Overfeeding is the #1 cause of water-quality crashes in tanks of all sizes.

Lotus tankmates and compatibility

Lotus is compatible with similar-temperament pond fish at appropriate stocking. Mixing predatory species (largemouth bass) with smaller pond fish (minnows, juvenile koi) creates a food chain. Plan stocking around adult sizes and territorial behaviors.

Browse care guides for tankmate-compatibility tables for Lotus and similar species.

Lotus adult size and lifespan

Lotus reaches 48 inch height at adulthood with a captive lifespan of perennial years with proper care. Pond fish often outlive their owners under proper care - koi can live 25-50+ years with stable parameters.

Can you breed Lotus?

Lotus propagates through tubers, runners, or division depending on the plant. Most aquatic plants propagate freely once established; trim and replant healthy growth in spring.

Common Lotus diseases and problems

Lotus can develop pond-specific issues: parasites (ich, costia, trichodina), bacterial infections (ulcers, fin rot), and seasonal stress around water temperature transitions. Maintain stable temperature changes (no more than 5°F per day during seasonal shifts), feed appropriately for water temperature, and inspect fish during spring restart for signs of overwintering damage.

Where to buy Lotus online

Lotus 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 Lotus 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.

Lotus FAQ

How big does Lotus get?

48 inch height at adulthood within 12-24 months.

How long does Lotus live?

perennial years with proper care.

What is the minimum tank/pond size?

500 gallons (pond), with larger systems strongly recommended.

Is Lotus hard to keep?

Lotus is rated intermediate difficulty.

What does Lotus eat?

Lotus is a photosynthetic; appropriate diet matches its natural feeding pattern.

Where can I buy Lotus?

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

How much does Lotus cost?

$15-500 depending on source and quality.

Do I need to quarantine Lotus?

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

Is Lotus reef safe?

Not applicable - Lotus is not a marine reef species.

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

Wakin GoldfishPickerel WeedPontederia cordataPumpkinseed SunfishLepomis gibbosusTancho Sanke KoiWhite Cloud Mountain MinnowButterfly KoiCyprinus rubrofuscus

Sources and references

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

Have a photo of Lotus?
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More resources for Lotus 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 Lotus

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

How long does Lotus take to acclimate to a new tank?

Drip acclimation over 60 to 90 minutes is the safest approach for Lotus. 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 Lotus?

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. Lotus responds well to stable nitrate (under 20 ppm) more than to any specific filter brand - stability beats peak performance.

Does Lotus 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. Lotus kept without adequate organic export tends to show stress within 90 days.

Can Lotus 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 Lotus in a high-tech CO2-injected setup with valuable cultivars.

What is the ideal lighting for Lotus?

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. Lotus tolerates a wider lighting band than most keepers expect; consistency matters more than peak intensity.

Does Lotus 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. Lotus 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 Lotus?

Sustained drift above +/- 2 F from target is the threshold most keepers miss. Lotus 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 Lotus 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 Lotus 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. Lotus kept in pairs or small groups often spawns even without intent if conditions are right.

What are the best tankmates to avoid for Lotus?

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. Lotus also struggles with hyper-aggressive cichlids in freshwater and damselfish in saltwater - both will hold territory at the expense of every other tankmate.

Is Lotus 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. Lotus 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 Lotus 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. Lotus 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.