A silica-shelled diatom powerhouse rich in EPA and essential amino acids. Thalassiosira weissflogii is the preferred strain for bivalves, sea urchins, and corals that thrive on diatom nutrition — and a critical feed for building dense, healthy copepod cultures.
Price range: $24.99 through $114.99
G2 Amber Silica The Diatom Difference — Silica-Shell Nutrition Your Reef Can’t Get Elsewhere
Thalassiosira weissflogii | G² Amber Silica is a marine diatom — a fundamentally different phytoplankton class than green or golden strains. Its silica cell wall delivers a unique nutritional profile rich in EPA omega-3, essential amino acids, and trace minerals that soft-shelled phytoplankton simply cannot replicate. In the wild, diatoms form the base of the marine food chain, and reef systems that include diatom nutrition consistently outperform those without.
Thalassiosira weissflogii | G² Amber Silica is particularly valuable for bivalves (clams, oysters, scallops), sea urchins, and any coral or invertebrate with a natural diatom-feeding ecology. It also significantly boosts copepod egg viability and nauplii survival rates when added alongside Isochrysis or Nannochloropsis.
Ideal for: Clams, scallops, oysters, sea urchins, SPS corals, copepod culture enhancement, advanced reef systems, aquaculture operations
Live Arrival Guarantee (LAG) We take immense pride in our cultivation process. We guarantee that all live cultures (Copepods and Phytoplankton) will arrive alive and healthy.
Claims Process In the rare event of a DOA (Dead on Arrival):
Non-Returnable Items Due to the biological nature of our products and strict biosecurity protocols, we cannot accept returns on live cultures once they have been delivered. This ensures that no outside contaminants ever enter our facility.
Cancellations Orders can be cancelled for a full refund at any time before the shipping label has been created. Once a live order is in the hands of the carrier, it is final.
Biological Shipping Schedule To ensure the highest viability of our live cultures, we ship Monday through Wednesday. Orders placed Thursday–Sunday will be dispatched the following Monday. This prevents your Phyto or Copepods from being held in carrier facilities over the weekend.
Transit Times
Weather Monitoring We monitor temperatures across the country daily. If your region is experiencing extreme heat (over 90°F) or cold (under 35°F), we may hold your shipment for 24-48 hours for the safety of the organisms. We will notify you via email if a weather delay occurs.
Tracking Your Culture Once your order is packed, you will receive a tracking number via email. Please arrange to be present for delivery to ensure your live cultures are brought indoors immediately.
Price range: $24.99 through $114.99
The rarest and most sought-after phytoplankton strain in reef aquaculture. Rhodomonas salina is packed with astaxanthin, phycoerythrin, and DHA — delivering coral color enhancement and antioxidant protection unavailable in any green or golden strain.
Price range: $24.99 through $114.99
Every reef zone. Every feeding niche. One bottle. The Pod Master Blend combines our hand-selected multi-species culture to seed rockwork, sand beds, and the water column simultaneously — the fastest way to establish a thriving, self-sustaining reef ecosystem.
Price range: $26.00 through $165.00
