Macronutrients + Vitamins

F/2 Macro is a carefully formulated blend of essential macronutrients and vitamins designed to support robust phytoplankton growth, cell division, and long-term culture vitality. Offered as a separate macro + vitamins solution alongside F/2 Trace metals, this two-part approach maximizes shelf life by preventing the rapid vitamin degradation that occurs when vitamins are combined with trace metals.

Rapid Growth: Provides bioavailable nitrogen (as nitrate) and phosphorus (as phosphate) to reduce lag time and stimulate rapid exponential growth.

Optimal Stability: Fully soluble ingredients maintain stable pH and salinity levels without causing carbonate-buffer shifts.

High-density Cultures: Supports cell densities exceeding 1 g·L¹ with proper lighting and aeration.

Directions & Dosage:

Shake well before use.

Standard Dose: Add 1 mL per gallon (3.8 liters) of fresh or saltwater.

Metric Dose: Use 0.25 mL per liter.

Always dose F/2 Macro in a 1 : 1 ratio with F/2 Trace.

For best results: Measure the required volume of F/2 Macro based on your culture volume.

Measure and add the required volume of F/2 Macro directly to your culture vessel containing both the phytoplankton inoculant and the additional fresh or saltwater for culture expansion.

Add an equal volume of F/2 Trace.

Provide consistent lighting and gentle aeration to maximize culture health and growth rates.

Ingredients:

Purified water, Sodium nitrate, monosodium phosphate, thiamine hydrochloride (Vit B1), vitamin B12, biotin.

Storage:

• Store at room temperature or refrigerate (2–8°C) to maintain maximum vitamin potency.
• Protect from direct light and temperatures above 120°F (50°C).
• Keep tightly sealed when not in use.

Safety Information:

• Not intended for human or animal consumption.
• Use gloves and safety glasses when handling.
• Avoid ingestion, inhalation, and contact with skin or eyes.
• Keep out of reach of children and pets.