Double the volume. Double the feeding power. This 32oz bottle of LIVE Nannochloropsis is designed for reefers with large systems (100+ gallons), heavy pod populations, or multiple coral-heavy tanks. With 200+ million live microalgae cells, you get weeks of natural, live nutrition at a better value per ounce than smaller bottles.
Why Go Big? The 32oz Advantage
If you have a large reef tank, breed fish, or maintain multiple systems, buying 16oz bottles repeatedly is inefficient and expensive. The 32oz size delivers:
- Lower cost per ounce – Save 20% compared to buying two 16oz bottles separately.
- Fewer shipments – One bottle lasts 8-12 weeks in a 100-gallon tank.
- Consistent feeding – Never run out mid-week with bulk reserve.
- Ideal for heavy feeders – Massive pod colonies, dense coral gardens, and breeding setups all need more phyto.
What Is Nannochloropsis?
Nannochloropsis is a single-celled marine microalgae packed with omega-3 fatty acids, proteins, and antioxidants. In your reef tank, it serves three critical roles:
- Live food for copepods, rotifers, and zooplankton
- Direct nutrition for LPS, SPS, and soft corals (filter feeders)
- Natural water purification through nutrient uptake
Unlike powdered or preserved phyto, our LIVE Nannochloropsis stays suspended in the water column for hours, giving corals and pods maximum feeding time. The 32oz bottle provides a continuous, abundant supply.
Why Choose Nannochloropsis for Your Reef?
🦐 1. Essential Copepod Food – At Scale
Copepods cannot survive on detritus alone. They require live microalgae to breed and thrive. A large reef tank needs a massive pod population to keep sand beds clean and mandarins fed. Dosing Nannochloropsis from a 32oz bottle ensures you never under-feed your pod colony.
🪸 2. Direct Coral Nutrition for Dense Gardens
Clams, feather dusters, gorgonians, sponges, and many LPS/SPS corals directly consume phytoplankton. If your tank is packed with corals, competition for food is real. The 32oz size lets you feed heavily and frequently without worrying about running out.
🧹 3. Natural Algae Competition – Large Volume
Live phytoplankton consumes the same nutrients (nitrates and phosphates) that nuisance algae and cyanobacteria need to grow. In large tanks, algae outbreaks require consistent, ongoing dosing to outcompete them. A 32oz bottle keeps you in the game for months.
🥚 4. Hatchery & Breeding Operations
Breeding clownfish, seahorses, or banggai cardinals? Rotifers are the first food for fry, and rotifers need Nannochloropsis constantly. Commercial breeders and serious hobbyists choose the 32oz size for uninterrupted hatchery production.
What’s Inside the 32oz Bottle?
- Volume: 32 fl oz (946 ml) – double the standard size
- Live Cell Count: 200+ million Nannochloropsis cells per bottle (verified via microscopy)
- Species: Nannochloropsis oculata / Nannochloropsis gaditana (mono-culture)
- Purity: 100% live culture – no preservatives, no additives, no refrigeration required until opened
- Color: Vibrant deep green (sign of healthy, dense culture)
- Shelf Life (unopened): 3-4 months stored in a cool, dark place
- Shelf Life (opened): 3-4 months refrigerated (shake well before each use)
- Value: Save 20% vs. buying two 16oz bottles separately
Who Needs the 32oz Size?
- ✅ Large reef tanks (100+ gallons): Smaller bottles are consumed too quickly.
- ✅ Heavy pod predators (multiple mandarins, wrasses): Keep your pod colony fed and breeding.
- ✅ Dense coral gardens: Heavy feeding for maximum growth and color.
- ✅ Commercial or hobby breeders: Continuous rotifer and fry production.
- ✅ Multiple tank systems: One bottle feeds your display + frag + refugium + quarantine.
- ✅ Anyone tired of reordering every 2 weeks: Stock up and dose with peace of mind.
How to Use (Dosing Guide for 32oz)
General Reef Tank Dosing (100+ gallons)
Maintenance Dose: 10-20ml per 100 gallons every other day.
Heavy Feeding (for corals/pods): 20-30ml per 100 gallons daily.
For Copepod Population Boosting (Large Tanks)
Dose 20ml per 100 gallons every day for the first two weeks after adding pods. Then reduce to every other day. A 32oz bottle will last approximately 4-6 weeks at heavy feeding rates.
For Hatcheries / Breeding Tanks
Add enough to tint water light green (approximately 30-40ml per 10 gallons). Re-dose when water clears. For constant flow hatcheries, a 32oz bottle may last 1-2 weeks depending on system size.
Storage Instructions for Bulk Size
Unopened: Store in a cool, dark cabinet (55-75°F ideal). Avoid direct sunlight and heat sources. Do not freeze.
Opened: Refrigerate immediately. Shake vigorously before each use (cells settle over time). Use within 3-4 months. Discard if smell turns sour/rotten or color becomes brown/clear.
What Our Customers Say About the 32oz Size
“I have a 220-gallon mixed reef with 5 wrasses and a mandarin. I was buying 16oz bottles every 10 days. Switched to 32oz and it lasts me almost a month. My pod population is stronger than ever and my corals have never looked better. Bulk is the way to go.”
— David P., 220-gallon SPS dominant
“I run a small clownfish breeding operation out of my garage. Rotifers eat through phyto like crazy. The 32oz bottle saves me money and reduces my ordering frequency. Quality is consistent batch to batch. Highly recommend.”
— Lisa M., home breeder
“My 150-gallon tank was always battling phosphates and algae. A friend told me to dose live phyto heavily to outcompete the bad algae. I bought the 32oz and committed to daily dosing. Three weeks later, my algae is receding and my torch corals are HUGE. Believer for life.”
— Kevin S., reefer for 8 years
Live Delivery Guarantee – 32oz Bulk Shipping
We ship 32oz bottles Monday–Wednesday via Priority Mail in insulated, temperature-controlled packaging with extra care for larger volumes. Because Nannochloropsis is a living culture, extreme temperatures during transit can affect viability. If your 32oz bottle arrives with no green color, a foul smell, or clear separation that doesn't mix back to green, contact us within 2 hours of delivery for a free replacement or full refund.
Frequently Asked Questions – 32oz Edition
Q: How long will a 32oz bottle last in my tank?
A: Depends on your tank size and feeding frequency. Example estimates:
- 50-gallon tank, light feeding (5ml every other day): ~128 days (4+ months)
- 100-gallon tank, standard feeding (10ml every other day): ~64 days (2 months)
- 150-gallon tank, heavy feeding (25ml daily): ~12-14 days
- Hatchery / rotifer culture: 5-14 days depending on system size
Q: Can I split the 32oz bottle between multiple tanks?
A: Absolutely. One 32oz bottle is perfect for feeding a display tank + refugium + frag tank + quarantine system. Just pour needed amounts into separate small containers (use within 1-2 weeks for each opened small container).
Q: Does the 32oz bottle need special storage?
A: Same as 16oz – store unopened in cool, dark place (not refrigerator). Once opened, refrigerate. Because the bottle is larger, we recommend using a clean syringe or measuring cup to extract phyto to avoid introducing bacteria into the main bottle.
Q: Is the 32oz bottle more concentrated than the 16oz?
A: Same concentration – 200+ million cells total (approximately 6-7 million cells per ml). The value comes from the bulk price, not higher concentration.
Q: Can I use this in a freshwater tank?
A: No. Nannochloropsis is a marine microalgae and will die in freshwater, clouding the tank without benefit. For freshwater, look for our Chlorella or freshwater phyto blends (sold separately).
Q: Do I need to acclimate phytoplankton?
A: No. Unlike fish or corals, phytoplankton can be poured directly into your tank or sump. No temperature acclimation required – though pouring into a high-flow area helps disperse it quickly.