Brightwell Aquatics PhytoGold-S
Overview
- Provides phytoplankton ranging in size from 4 – 10µm.
- Ideally-sized for many soft corals, clams, sponges, tunicates, tube worms, and larval invertebrates.
- Formulated to provide over 75-million phytoplankton cells per ml.
- Does not require refrigeration.
- Supplemented with a proprietary amino acid to aid in coloration of invertebrates.
- Formulated by a marine scientist.
Technical Background
Brightwell Aquatics PhytōGold-S is a concentrated suspension of Isochrysis sp. and Pavlova sp., unicellular marine algae ranging in size from 4 – 10µm and providing the three omega-3 fatty acids EPA, DHA, and ARA; both species of phytoplankton are particularly suitable for marine invertebrate nutrition.
| Parameter | Value |
|---|---|
| Phytoplankton Size Range | 4 – 10µm |
| Cells per ml | Over 75 million |
| Omega-3 Fatty Acids | EPA, DHA, ARA |
| Storage Requirement | Does not require refrigeration |
| Formulation Basis | Marine scientist-developed |
FAQ
What types of marine invertebrates benefit from PhytoGold-S?
PhytoGold-S is ideally suited for soft corals, clams, sponges, tunicates, tube worms, and larval invertebrates due to its particle size and nutritional profile.
Is refrigeration required to store PhytoGold-S?
No, PhytoGold-S does not require refrigeration and can be stored at room temperature.
What omega-3 fatty acids are included in PhytoGold-S?
PhytoGold-S provides EPA, DHA, and ARA, which are essential for invertebrate health and coloration.

Abigail Lambert –
Used PhytoGold-S for my soft corals and tube worms. The coloration improved noticeably within a week. The product is easy to mix and stays stable without refrigeration. Great value for the quality.
Carol Duncan –
My sponges and larval invertebrates have shown better growth and vibrant color after switching to PhytoGold-S. The cell count is high and the formulation is well balanced.
Katherine Edmunds –
Good product with consistent phytoplankton size. Works well with my tunicates. No issues with storage or mixing. A bit expensive, but the results justify the cost.