Is 1ml for each Liter accurate? Isn’t f/2 generally 1ml per every 2L?

I do 1ml per then add an extra ml at the end

What exactly is in this?

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!

When will stock be available ?

The 16oz and 32oz are currently in stock and the 8oz should be back in stock in a couple days.

Desertcart Logo

Deliver to Netherlands

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🌿 Elevate your marine culture game with Guillard’s F/2 – where science meets ocean vitality!

LONG LASTING SUPPLY - 8 oz bottle treats up to 240 liters, keeping your marine environment thriving longer.
EFFORTLESS APPLICATION - Just 1 ml per liter—easy dosing that maximizes your culture’s potential.
SAFE FOR SENSITIVE SYSTEMS - Silicate-free formula ensures zero risk to delicate reef tanks and marine invertebrates.
POWER PACKED NUTRIENT BOOST - Essential vitamins & trace elements fuel explosive phytoplankton growth.
MARINE ECOSYSTEM GAME CHANGER - Trusted by aquaculture pros for cultivating key species like Nannochloropsis & Tetraselmis.

Guillard's F/2 Formula is a concentrated, silicate-free nutrient solution designed to optimize marine phytoplankton growth. Ideal for aquaculture and reef tanks, this 8 oz bottle efficiently treats up to 240 liters of saltwater, delivering essential vitamins and trace elements to support robust marine ecosystems.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.