---
product_id: 665084835
title: "16oz Concentrated Guillard's F/2 Formula for Marine Phytoplankton Cultivation, Aquaculture, Reef Tanks, 16 ounces"
brand: "aqua algae"
price: "15978 kr"
currency: ISK
in_stock: true
category: "Aqua Algae"
url: https://www.desertcart.is/products/665084835-16oz-concentrated-guillards-f-2-formula-for-marine-phytoplankton-cultivation
store_origin: IS
region: Iceland
---

# Scientifically proven F/2 formula Silicate-free reef safe 470+ L culture volume 16oz Concentrated Guillard's F/2 Formula for Marine Phytoplankton Cultivation, Aquaculture, Reef Tanks, 16 ounces

**Brand:** aqua algae
**Price:** 15978 kr
**Availability:** ✅ In Stock

## Summary

> 🌿 Cultivate the Future of Your Reef—Fuel Life, Save Big!

## Quick Answers

- **What is this?** 16oz Concentrated Guillard's F/2 Formula for Marine Phytoplankton Cultivation, Aquaculture, Reef Tanks, 16 ounces by aqua algae
- **How much does it cost?** 15978 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/665084835-16oz-concentrated-guillards-f-2-formula-for-marine-phytoplankton-cultivation)

## 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

- • **Massive Culture Capacity:** One bottle makes over 470 liters (124+ gallons) of nutrient-rich phytoplankton medium—economy meets efficiency.
- • **Reef-Safe & Silicate-Free:** Lab-grade purity ensures no brown algae blooms, keeping your reef ecosystem pristine and vibrant.
- • **Scientifically Backed Formula:** Guillard's F/2 standard packed with essential macronutrients, trace minerals, and vitamins for explosive algae growth.
- • **Beginner-Friendly & Easy to Use:** Simple dosing instructions and minimal effort to maintain a flourishing marine microalgae culture.
- • **Grow Your Own Endless 'Pod' Food:** Double your value with a 16oz super-concentrated formula that fuels thriving copepods, rotifers, and corals.

## Overview

This 16oz concentrated Guillard's F/2 formula is a professional-grade, silicate-free nutrient solution designed for marine phytoplankton cultivation. It supports the growth of live microalgae essential for feeding reef tank inhabitants like copepods and corals. One bottle yields over 470 liters of culture medium, offering an economical and scientifically validated way to maintain a thriving aquatic ecosystem.

## 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

- 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 |
| Best Sellers Rank | #54,916 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,060 in Water Treatments |
| Country of Origin | USA |
| Item Weight | 453 g |
| Manufacturer | Aqua Algae |
| Net Quantity | 16.0 Milliliters |

## Product Details

- **Brand:** Aqua Algae
- **Item Form:** Liquid
- **Item Weight:** 16 Ounces
- **Manufacturer:** Aqua Algae
- **UPC:** 661317842075

## Images

![16oz Concentrated Guillard's F/2 Formula for Marine Phytoplankton Cultivation, Aquaculture, Reef Tanks, 16 ounces - 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)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.is/products/665084835-16oz-concentrated-guillards-f-2-formula-for-marine-phytoplankton-cultivation](https://www.desertcart.is/products/665084835-16oz-concentrated-guillards-f-2-formula-for-marine-phytoplankton-cultivation)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-14*