--- product_id: 376461111 title: "32oz Concentrated Guillards F/2 Formula" brand: "aqua algae" price: "£56.73" currency: GBP in_stock: true reviews_count: 8 category: "Aqua Algae" url: https://www.desertcart.co.uk/products/376461111-32oz-concentrated-guillards-f-2-formula store_origin: GB region: United Kingdom --- # 100% silicate-free & reef safe Produces 240+ gallons of culture medium 32oz super-concentrated formula 32oz Concentrated Guillards F/2 Formula **Brand:** aqua algae **Price:** £56.73 **Availability:** ✅ In Stock ## Summary > 🌿 Cultivate the future of your reef with every drop! ## Quick Answers - **What is this?** 32oz Concentrated Guillards F/2 Formula by aqua algae - **How much does it cost?** £56.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/376461111-32oz-concentrated-guillards-f-2-formula) ## 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 - • **Unmatched Volume & Value:** One bottle fuels over 240 gallons of nutrient-rich phytoplankton culture—never run dry again. - • **Reef-Safe & Silicate-Free:** Protect your delicate reef ecosystem by avoiding harmful diatom outbreaks with pure lab-grade ingredients. - • **Scientifically Proven Formula:** Guillard's F/2 standard ensures optimal macro- and micronutrient balance for explosive algae growth. - • **Effortless High-Volume Culturing:** Simple dosing—just 1mL per liter—makes large-scale phytoplankton cultivation a breeze. - • **Trusted by Professionals & Enthusiasts:** 4.7-star rated with rave reviews for consistent, dense culture yields. ## Overview Aqua Algae’s 32oz Concentrated Guillard's F/2 Formula is a premium, lab-grade liquid solution designed to produce over 240 gallons of nutrient-rich phytoplankton culture. Trusted worldwide, this silicate-free formula supports healthy algae growth essential for reef ecosystems, copepods, and filter feeders. Ideal for large tanks and aquaculture, it offers unbeatable value and easy dosing for sustained, high-volume cultivation. ## 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 32 oz bottle is enough for approximately 960 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 - UNBEATABLE VALUE & SUPPLY: Stop running out! Our 32oz super-concentrated F/2 formula provides the most economical way to produce a continuous, abundant supply of live, nutrient-rich phytoplankton for your entire reef ecosystem. Perfect for large tanks, multiple systems, or small aquaculture operations. - MASSIVE YIELD (OVER 240 GALLONS): This generous 32oz (946mL) bottle is enough to make an incredible over 940 liters (248+ gallons) of full-strength culture medium! Significantly reduce costs and ensure a consistent food source for your copepods, rotifers, filter feeders, and corals. - ​THE PROFESSIONAL STANDARD (GUIL-LARD'S F/2): Rely on the best. Our solution is based on the scientifically proven Guillard's F/2 formula, trusted worldwide for its complete balance of essential macronutrients, trace minerals, and vitamins (B1, B12, Biotin) necessary for explosive and healthy algae growth. - SILICATE-FREE & REEF SAFE: Crafted with pure, lab-grade ingredients. Our F/2 formula is 100% silicate-free, ensuring you grow beneficial microalgae without contributing to diatom (brown algae) outbreaks in your main display tank. Safe for all reef inhabitants when used as directed. - EASY TO USE FOR HIGH-VOLUME CULTURES: Despite its size, dosing remains simple. Follow our clear instructions: just 1mL per 1 Liter of new saltwater, add your starter culture, and provide light. Shake well before each use for optimal results in your large-scale culturing efforts. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Aqua Algae | | Customer Reviews | 4.7 out of 5 stars 111 Reviews | | Item Form | Liquid | | Item Weight | 32 Ounces | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Aqua Algae | | UPC | 661317842082 | ## Product Details - **Brand:** Aqua Algae - **Liquid Volume:** 32 Fluid Ounces - **Item Weight:** 32 Ounces - **Item Form:** Liquid - **Manufacturer:** Aqua Algae ## Images ![32oz Concentrated Guillards F/2 Formula - Image 1](https://m.media-amazon.com/images/I/41Jv4+sgvyL.jpg) ## 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! ### ⭐⭐⭐⭐⭐ Concentrrated. *by R***A on January 24, 2026* I find this formula of F2 to be nicely concentrated. The amount to add to a culture, per their instructions, has worked well for me with my Nannochloropsis algae. --- ## 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.co.uk/products/376461111-32oz-concentrated-guillards-f-2-formula](https://www.desertcart.co.uk/products/376461111-32oz-concentrated-guillards-f-2-formula) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*