---
product_id: 371143463
title: "F2 Ferts (16oz) – Concentrated Guillard's F/2 Formula for Phytoplankton Culture - Professional Algae Fertilizer for Nannochloropsis & Tetraselmis - Boosts Copepod & Reef Tank Health"
brand: "aqua algae"
price: "€ 108.37"
currency: EUR
in_stock: true
category: "Aqua Algae"
url: https://www.desertcart.hr/products/371143463-f2-ferts-16oz-concentrated-guillards-f-2-formula-for-phytoplankton
store_origin: HR
region: Croatia
---

# Supports up to 480L culture Concentrated liquid formula Optimized for phytoplankton growth F2 Ferts (16oz) – Concentrated Guillard's F/2 Formula for Phytoplankton Culture - Professional Algae Fertilizer for Nannochloropsis & Tetraselmis - Boosts Copepod & Reef Tank Health

**Brand:** aqua algae
**Price:** € 108.37
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your reef game with every drop!

## Quick Answers

- **What is this?** F2 Ferts (16oz) – Concentrated Guillard's F/2 Formula for Phytoplankton Culture - Professional Algae Fertilizer for Nannochloropsis & Tetraselmis - Boosts Copepod & Reef Tank Health by aqua algae
- **How much does it cost?** € 108.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/371143463-f2-ferts-16oz-concentrated-guillards-f-2-formula-for-phytoplankton)

## Best For

- aqua algae enthusiasts

## Why This Product

- Trusted aqua algae brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Silicate-Free Purity:** No silicates means cleaner, healthier cultures without unwanted residues
- • **Massive Culture Capacity:** One 16 oz bottle treats up to 480 liters—scale your reef tank effortlessly
- • **Precision Dosage Formula:** Just 1 ml per liter for optimal growth—easy and efficient
- • **Reef & Copepod Health Amplifier:** Enhances copepod vitality and reef tank ecosystem balance
- • **Power-Packed Phytoplankton Boost:** High in essential vitamins to supercharge your marine cultures

## Overview

F2 Ferts (16oz) is a concentrated liquid fertilizer based on Guillard's F/2 formula, designed specifically for cultivating marine phytoplankton like Nannochloropsis and Tetraselmis. It delivers essential vitamins without silicates, enabling high-density cultures and supporting healthy copepod and reef tank ecosystems. One bottle treats up to 480 liters, making it a professional-grade solution for serious aquarists.

## Description

This is a commonly used enrichment solution used in the culture of marine phytoplankton.High in essential vitaminsStimulates high concentration phytoplankton culturesContains no silicatesDirections: Simply add 1 ml to 1 L (2 ml to a 2 L pop bottle) of fresh saltwater at ~1.019 s.g., add your starter culture and light ~16 hours per day. A 16 oz bottle is enough for approximately 480 liters at f/2 concentration! Keep in a cool, dark area and shake prior to use.

## Features

- Brand: Aqua algae
- Item form: Liquid
- Brand: Aqua Algae

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZYMLQ8G |
| Batteries Included | No |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | 29 March 2021 |
| Item Form | Liquid |
| Item Weight | 453 g |
| Number of Items | 1 |
| Package Dimensions | 25.1 x 6.6 x 6.5 cm; 453.59 g |
| Size | 450 g |
| batteries required | No |

## Product Details

- **Brand:** Aqua Algae
- **Item form:** Liquid
- **Item weight:** 16 Ounces
- **Manufacturer:** Aqua Algae
- **UPC:** 661317842075

## Images

![F2 Ferts (16oz) – Concentrated Guillard's F/2 Formula for Phytoplankton Culture - Professional Algae Fertilizer for Nannochloropsis & Tetraselmis - Boosts Copepod & Reef Tank Health - Image 1](https://m.media-amazon.com/images/I/51T-gQ0o8UL.jpg)

## Questions & Answers

**Q: Is 1ml for each Liter accurate? Isn’t f/2 generally 1ml per every 2L?**
A: I do 1ml per then add an extra ml at the end

**Q: What exactly is in this?**
A: Hi,

The ingredients include water, sodium nitrate, sodium phosphate, iron chloride, sodium EDTA, copper sulfate, zinc sulfate, sodium molybdate, cobalt chloride, manganese chloride, thiamine, biotin, and cyanocobalamin. 

Thanks!

**Q: Store on shelf or in refrigerator?**
A: On shelf

**Q: When will stock be available ?**
A: The 16oz and 32oz are currently in stock and the 8oz should be back in stock in a couple days.

## Frequently Bought Together

- Aqua Algae 16oz Concentrated Guillard's F/2 Formula for Marine Phytoplankton Cultivation, Aquaculture, Reef Tanks, 16 ounces
- North Mountain Supply 1 Gallon Glass Jar Wide Mouth with Black Plastic Lid - USDA, BPA-Free, Made in the USA - for Fermenting, Storing, Canning, and Much More!
- The Coral Ranch - Guillard's F/2 Formula Microalgae Fertilizer Concentrate 12 fl oz (350ml)

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**Shop now:** [https://www.desertcart.hr/products/371143463-f2-ferts-16oz-concentrated-guillards-f-2-formula-for-phytoplankton](https://www.desertcart.hr/products/371143463-f2-ferts-16oz-concentrated-guillards-f-2-formula-for-phytoplankton)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-18*