---
product_id: 323881221
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: "€ 64.27"
currency: EUR
in_stock: true
reviews_count: 8
category: "Aqua Algae"
url: https://www.desertcart.gr/products/323881221-f2-ferts-16oz-concentrated-guillards-f-2-formula-for-phytoplankton
store_origin: GR
region: Greece
---

# Scientifically proven F/2 formula 470+ L culture volume 100% silicate-free & reef safe 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:** € 64.27
**Availability:** ✅ In Stock

## Summary

> 🌊 Fuel Your Reef’s Future 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?** € 64.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/323881221-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

- • **Reef-Safe & Silicate-Free:** Protect your delicate reef inhabitants with a pure, lab-grade formula that prevents harmful diatom blooms.
- • **Sustainable & Cost-Effective:** Stop wasting money on short-lived bottles—this concentrated solution supports long-term, eco-friendly pod food production.
- • **Scientifically Backed Formula:** Harness the power of Guillard's F/2, packed with essential macronutrients, trace minerals, and vitamins for explosive algae growth.
- • **Maximize Your Microalgae Growth:** Grow over 470 liters of nutrient-rich phytoplankton from a single 16oz bottle—unmatched value for your reef ecosystem.
- • **Effortless Culturing for All Levels:** Simple dosing instructions make it easy for beginners and pros alike to maintain thriving phytoplankton cultures.

## Overview

F2 Ferts (16oz) is a professional-grade, concentrated Guillard's F/2 formula designed for cultivating high-density phytoplankton cultures. Ideal for feeding copepods, rotifers, and corals, this silicate-free, reef-safe fertilizer enables users to produce over 470 liters of nutrient-rich algae culture from a single bottle. Backed by science and easy to use, it supports sustainable reef tank health and vibrant aquatic ecosystems.

## 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.

Review: Good Product - Works like a charm
Review: My chlorella vulgaris is blowing up in density! - This stuff has helpled my chlorella vulgaris culture grow wonderfully! And its sheer size could last me multiple decades based on my math (which hopefully isn’t flawed)! Overall, wonderful product! Would recommend for any phytoplankton or algae culture!

## Features

- GROW YOUR OWN "POD" FOOD (DOUBLE THE VALUE): Stop overpaying for small, short-lived phytoplankton bottles. Our concentrated F/2 formula is the secret to easily growing your own endless, nutrient-dense supply of live microalgae to feed your copepods, rotifers, and corals. This 16oz size offers even greater savings per liter!
- SUPER-CONCENTRATED 16oz BOTTLE: A little goes a very long way. This generous 16oz (473mL) bottle is enough to make over 470 liters (124+ gallons) of full-strength culture medium. It's the most economical way to support a thriving reef ecosystem and keep your cultures booming!
- THE PROFESSIONAL STANDARD (GUIL-LARD'S F/2): Don't guess with your fertilizer. Our solution is based on the scientifically proven Guillard's F/2 formula, containing all essential macronutrients, trace minerals, and vitamins (B1, B12, Biotin) for explosive algae growth.
- SILICATE-FREE & REEF SAFE: Brewed with pure, lab-grade ingredients. This formula is 100% silicate-free, so it won't trigger a diatom (brown algae) bloom in your display tank. It's completely safe for all reef inhabitants when used as directed.
- EASY TO USE FOR BEGINNERS: Includes clear, simple instructions. Just add 1mL per 1 Liter (or 2mL to a standard 2L pop bottle) of new saltwater, add your starter culture, and provide light. Shake well before each use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZYMLQ8G |
| ASIN  | B08ZYMLQ8G |
| Best Sellers Rank | #27,983 in Pet Supplies ( See Top 100 in Pet Supplies ) #256 in Aquarium Water Treatments |
| Brand Name | Aqua Algae |
| Customer Reviews | 4.7 4.7 out of 5 stars (108) |
| Date First Available | March 24, 2021 |
| Date First Available  | March 24, 2021 |
| Directions | 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. |
| Item Package Dimensions L x W x H | 8.03 x 2.48 x 2.32 inches |
| Item Weight | 16 Ounces |
| Manufacturer | Aqua Algae |
| Manufacturer  | Aqua Algae |
| Number of Items | 1 |
| Package Dimensions  | 8.03 x 2.48 x 2.32 inches; 1 Pounds |
| Size | 16 |
| Target Audience Keyword | fish |

## 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Product
*by A***. on December 9, 2025*

Works like a charm

### ⭐⭐⭐⭐⭐ My chlorella vulgaris is blowing up in density!
*by A***S on November 7, 2025*

This stuff has helpled my chlorella vulgaris culture grow wonderfully! And its sheer size could last me multiple decades based on my math (which hopefully isn’t flawed)! Overall, wonderful product! Would recommend for any phytoplankton or algae culture!

### ⭐⭐⭐⭐⭐ Good food for phytoplankton.
*by J***O on September 24, 2025*

This helps amazingly with my Phytoplankton culture. Thanks for this product.

## 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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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-25*