Description
50/50 Tetraselmis & Nannochloropsis – Why a Mixed Phytoplankton Culture Makes More Sense
Freshly cultured – packed to order for maximum cell density and vitality.
On natural reefs, corals and filter feeders are never exposed to a single species of phytoplankton. They receive a constantly changing blend of microalgae, each contributing different fatty acids, proteins and micronutrients. A 50/50 mix of Tetraselmis and Nannochloropsis recreates that diversity and provides a far more complete food source than either culture on its own.
Complementary Strengths of Two Proven Species
Nannochloropsis – the omega powerhouse
Exceptionally rich in EPA (eicosapentaenoic acid), one of the most important marine omega-3 fatty acids
Excellent fuel for copepod and rotifer reproduction
Helps improve coral energy reserves and tissue repair
Small cell size ideal for SPS polyps and micro-filter feeders
Tetraselmis – the nutrient-dense all-rounder
Larger, motile cells packed with proteins, vitamins, pigments and antioxidants
Contains a broader range of amino acids and natural carotenoids
Stimulates strong feeding responses in LPS, soft corals and filter invertebrates
Particularly valuable for clams, feather dusters and sponge communities
Together they deliver what a single culture cannot:
a wider fatty-acid spectrum, mixed particle sizes and a richer micronutrient profile that more closely mirrors the plankton soup of the ocean.
Real Benefits Inside the Aquarium
Faster copepod populations – ideal for mandarins, wrasses and dragonets
Improved polyp extension, colour and growth in SPS, LPS and soft corals
Effective feeding for non-photosynthetic corals and filter feeders
Supports a stable, natural microfauna web rather than just “green water”
Helps balance nutrients by encouraging biological uptake instead of relying only on mechanical filtration
Different organisms prefer different prey sizes and compositions. The mix ensures that everything from tiny coral polyps to larger suspension feeders can capture something useful from every dose.
Why Not Just Use One Species?
A pure Nannochloropsis culture is excellent for EPA but relatively limited in vitamins and pigments.
A pure Tetraselmis culture is nutritionally rich but lacks the ultra-high EPA levels many marine organisms depend on.
By combining them you avoid nutritional blind spots and reduce the risk of long-term deficiencies, especially in systems where phytoplankton is the primary plankton feed.
Cultured for Quality, Not Shelf Life
Grown in clean, controlled conditions
Packed fresh to order – not diluted or stored for months
High cell density with active, living algae
Suitable for daily dosing, pod cultures and filter-feeder systems
Ideal For
Reef tanks dominated by SPS or mixed reefs
Copepod and rotifer breeding
Clams, gorgonians, feather dusters and sponges
Nutrient-controlled systems where live phyto is used as a natural export method
50/50 Tetraselmis & Nannochloropsis is not just “two greens in a bottle” – it’s a balanced plankton diet designed around how marine life actually feeds.



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