--- product_id: 376461111 title: "32oz Concentrated Guillards F/2 Formula" brand: "aqua algae" price: "€ 117.74" currency: EUR in_stock: true reviews_count: 8 category: "Aqua Algae" url: https://www.desertcart.be/products/376461111-32oz-concentrated-guillards-f-2-formula store_origin: BE region: Belgium --- # 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:** € 117.74 **Availability:** ✅ In Stock ## Summary > 🌿 Cultivate Brilliance: Power Your Reef with the Ultimate Phytoplankton Fuel! ## Quick Answers - **What is this?** 32oz Concentrated Guillards F/2 Formula by aqua algae - **How much does it cost?** € 117.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/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 32oz bottle yields over 940 liters of nutrient-rich culture—never run dry again. - • **Reef-Safe & Silicate-Free:** Protect your delicate 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—perfect for large tanks, multiple systems, or aquaculture setups. - • **Trusted by Professionals Worldwide:** Join the ranks of expert reef keepers and aquaculturists who rely on this industry-leading formula. ## Overview The 32oz Concentrated Guillards F/2 Formula by Aqua Algae is a premium, lab-grade enrichment solution designed to produce over 240 gallons of nutrient-rich phytoplankton culture. Trusted globally for its scientifically validated nutrient profile, it supports healthy algae growth without silicates, ensuring reef-safe, high-yield cultures ideal for large aquariums and aquaculture operations. ## 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 for Pyrocystis - Used this to culture some Pyrocystis/bioluminescent dinoflagellates and its working well, the new cultures I made with the ferts are vigorous and healthy. Not sterile so take some caution but that's easy enough to overcome. Review: The good stuff - This will grow yoir culture correctly. Don't substitute!! ## 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 | |---------------|-------| | ASIN | B08ZXL23JJ | | Best Sellers Rank | #24,259 in Pet Supplies ( See Top 100 in Pet Supplies ) #209 in Aquarium Water Treatments | | Brand | Aqua Algae | | Brand Name | Aqua Algae | | Customer Reviews | 4.7 out of 5 stars 127 Reviews | | Item Form | Liquid | | Item Weight | 32 Ounces | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Aqua Algae | | Target Species | Shrimp | | UPC | 661317842082 | | Unit Count | 32.00 Fluid Ounces | ## 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 for Pyrocystis *by P***N on March 16, 2026* Used this to culture some Pyrocystis/bioluminescent dinoflagellates and its working well, the new cultures I made with the ferts are vigorous and healthy. Not sterile so take some caution but that's easy enough to overcome. ### ⭐⭐⭐⭐⭐ The good stuff *by B***D on April 20, 2026* This will grow yoir culture correctly. Don't substitute!! ### ⭐⭐⭐⭐⭐ 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! --- ## 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.be/products/376461111-32oz-concentrated-guillards-f-2-formula](https://www.desertcart.be/products/376461111-32oz-concentrated-guillards-f-2-formula) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-11*