--- product_id: 741777075 title: "Coralline Algae in a Bottle Purple Helix Live Algae Spores for Saltwater Aquarium and Reef Tanks" brand: "arc reef" price: "€ 4.54" currency: EUR in_stock: false reviews_count: 5 url: https://www.desertcart.pt/products/741777075-coralline-algae-in-a-bottle-purple-helix-live-algae-spores store_origin: PT region: Portugal --- # Fastest coralline growth 1 bottle per 50 gallons 2 new algae species added Coralline Algae in a Bottle Purple Helix Live Algae Spores for Saltwater Aquarium and Reef Tanks **Brand:** arc reef **Price:** € 4.54 **Availability:** ❌ Out of Stock ## Summary > 🌿 Elevate your reef game with the ultimate purple power-up! ## Quick Answers - **What is this?** Coralline Algae in a Bottle Purple Helix Live Algae Spores for Saltwater Aquarium and Reef Tanks by arc reef - **How much does it cost?** € 4.54 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/741777075-coralline-algae-in-a-bottle-purple-helix-live-algae-spores) ## Best For - arc reef enthusiasts ## Why This Product - Trusted arc reef brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Dosing:** Easy-to-use liquid formula—just 1 bottle per 50 gallons ensures perfect coverage every time. - • **Freshness Guaranteed:** Use within 21 days of receipt to maximize live algae spore viability and rapid growth. - • **Instant Reef Glow-Up:** Fastest way to introduce vibrant purple coralline algae and transform your tank’s aesthetic. - • **Next-Gen Algae Blend:** Newest formula enriched with 2 additional algae species for enhanced biodiversity and reef health. - • **Versatile Application:** Safe and effective at any tank stage, from new setups to mature reef ecosystems. ## Overview ARC Reef’s Coralline Algae in a Bottle delivers a potent, liquid blend of live algae spores—including 2 new species—to rapidly establish vibrant purple coralline growth in saltwater and reef aquariums. Designed for easy dosing at 1 bottle per 50 gallons, it’s effective at any tank stage and best used within 21 days for optimal results. ## Description The Fastest Way to add Coralline Algae to Your Aquarium. Newest version with 2 added Algae Species Now Included. Use at any stage to Introduce Vibrant Purple Coralline. Use wihin 21 Days of Receiving. 1 Bottle is needed per each 50 Gals. of Tank Volume. Review: Works really well, works fast, and was robust to my screw ups - This stuff worked really well. So well I decided to come back and write a review and I almost never write reviews. I believe the instructions said that it could take almost two months to see full results. I started to see results immediately (little red patches here and there). But what more impressed me was that separately I was starting to get a green algae problem (which nothing to do with this product -- I had dumped some algae contaminated water into the take as a part of a failed copepod related exercise), so I had to turn off all my lights. Two months later I got the green algae problem under control but because there were no lights for that whole period it also stopped progress on the coraline. I thought I'd have to start over and order a new bottle of this product. But no, as soon as I turned the lights back on the little patches of red (that during the lights out period had turned a little brown), sprung back to life and started spreading. The process is not complete, but my hard scape is starting to look great. Long strong short this product works well, works pretty fast, and is robust to screw ups. Review: Easy and truly works - I dont normally leave reviews but thought I would for this considering how well it has worked. I bought a bottle back in August and dosed it into my tank on August 18th. Roughly a week later I began to notice small spots of coralline forming on my rockwork. One month later it has absolutely taken off! The growth is exponential and starts slow but as the spots of coralline grow the speed in which they grow increases. There’s multiple strains of algae within the bottle so you get different shades that grow on your rocks depending on the lighting that spot receives. For example the picture I posted with this review shows a spot on the back side of the rock for my aqua scape. You can see the bright pink spots growing on the rock by one of my rock flowers. The anemone is roughly 2 inches in diameter for reference on one months growth. When I dosed I poured the entire contents of the bottle into my tank and then rinsed with tank water and poured it into the tank again. Yes you will inevitably get coralline in your tank that will be introduced from frags or snail shells. But that introduction can take months. This cuts your time dramatically and gives you tons of diversity. I feel the people who are having issues or claiming that it’s just a bottle of water may not be giving it time to grow or may not be maintaining water conditions that promote the growth of calcareous algaes ## Features - The Fastest Way to add Coralline Algae to Your Aquarium. - Newest version with 2 added Algae Species Now Included. - Use at any stage to Introduce Vibrant Purple Coralline. - Use wihin 21 Days of Receiving. - 1 Bottle is needed per each 50 Gals. of Tank Volume. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08WRM6WT9 | | Brand | ARC Reef | | Brand Name | ARC Reef | | Customer Reviews | 3.9 out of 5 stars 344 Reviews | | Item Form | Liquid | | Item Weight | 13 Ounces | | Liquid Volume | 8 Fluid Ounces | | Manufacturer | ARC Reef | | Net Quantity | 1.00 Count | | Target Species | Shrimp | | Unit Count | 1.00 Count | ## Product Details - **Brand:** ARC Reef - **Liquid Volume:** 8 Fluid Ounces - **Item Weight:** 13 Ounces - **Item Form:** Liquid - **Manufacturer:** ARC Reef ## Images ![Coralline Algae in a Bottle Purple Helix Live Algae Spores for Saltwater Aquarium and Reef Tanks - Image 1](https://m.media-amazon.com/images/I/61zz-VGjoAL.jpg) ## Questions & Answers **Q: What purpose does the brush serve? I have used the Pink Fusion a couple times and never got a brush with it.** A: This latest version contains an added coralline species whose zoospores will attach to the inner walls of the bottle during shipping. The included brush is used to brush inside the bottle to loosen and detach these zoospores in order to have them enter your tank and resettle. Thank you for the question we will upload a graphic shortly with the new directions. Happy Reefing! **Q: Will the product be fine if it sits in the cold after being delivered? I might not be home when it arrives.** A: It's perishable. I'd get it to a stable temperature and use it as soon as you are able. **Q: Will this work for a 15 gallon tank?** A: Yes this will work for a 15 gallon aquarium! **Q: Does this come on ice? Nitrifying bacteria is really sensitive to temp swings. It should be shipped and stored on ice** A: We pack all orders based on current weather conditions of the journey, which most often includes a cold pack during shipping. While the coralline algae bottles do contain some nitrifying bacteria, the coralline spores are more sensitive and are best at room temperature (similar to your fish tank) and so all packages are aimed to arrive at a moderate temperature. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works really well, works fast, and was robust to my screw ups *by C***I on 16 January 2024* This stuff worked really well. So well I decided to come back and write a review and I almost never write reviews. I believe the instructions said that it could take almost two months to see full results. I started to see results immediately (little red patches here and there). But what more impressed me was that separately I was starting to get a green algae problem (which nothing to do with this product -- I had dumped some algae contaminated water into the take as a part of a failed copepod related exercise), so I had to turn off all my lights. Two months later I got the green algae problem under control but because there were no lights for that whole period it also stopped progress on the coraline. I thought I'd have to start over and order a new bottle of this product. But no, as soon as I turned the lights back on the little patches of red (that during the lights out period had turned a little brown), sprung back to life and started spreading. The process is not complete, but my hard scape is starting to look great. Long strong short this product works well, works pretty fast, and is robust to screw ups. ### ⭐⭐⭐⭐⭐ Easy and truly works *by A***S on 22 September 2022* I dont normally leave reviews but thought I would for this considering how well it has worked. I bought a bottle back in August and dosed it into my tank on August 18th. Roughly a week later I began to notice small spots of coralline forming on my rockwork. One month later it has absolutely taken off! The growth is exponential and starts slow but as the spots of coralline grow the speed in which they grow increases. There’s multiple strains of algae within the bottle so you get different shades that grow on your rocks depending on the lighting that spot receives. For example the picture I posted with this review shows a spot on the back side of the rock for my aqua scape. You can see the bright pink spots growing on the rock by one of my rock flowers. The anemone is roughly 2 inches in diameter for reference on one months growth. When I dosed I poured the entire contents of the bottle into my tank and then rinsed with tank water and poured it into the tank again. Yes you will inevitably get coralline in your tank that will be introduced from frags or snail shells. But that introduction can take months. This cuts your time dramatically and gives you tons of diversity. I feel the people who are having issues or claiming that it’s just a bottle of water may not be giving it time to grow or may not be maintaining water conditions that promote the growth of calcareous algaes ### ⭐ 0 stars. Forced to give 1 *by T***C on 19 October 2021* Forced to give this even 1 star. I would have chosen 0.. It’s been 4 1\2 weeks. My water is perfect. I followed the directions exactly as stated. I had really high hopes for this product. It didn’t even look like anything was in the bottle. Looked like straight water. I watched as I poured it in my tank to see if there were any particles or anything at all showing. Totally clear. I still kept my hopes up. After waiting patiently for 4 1/2 weeks there isn’t even a single spec or sign of coralline. SO DISAPPOINTED!! TERRIBLE WASTE OF MONEY!! ## Frequently Bought Together - Coralline Algae in a Bottle Purple Helix Live Algae Spores for Saltwater Aquarium and Reef Tanks - Coralline Algae in a Bottle + Nitrifying Bacteria for Saltwater Aquariums, Pink Fusion Strain - Brightwell Aquatics - Coralline Accelerator - Multi-Nutrient Supplement for Coralline Algae Growth in Marine and Reef Aquariums - Aquarium Water Treatments, 8.45 fl oz --- ## 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.pt/products/741777075-coralline-algae-in-a-bottle-purple-helix-live-algae-spores](https://www.desertcart.pt/products/741777075-coralline-algae-in-a-bottle-purple-helix-live-algae-spores) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-17*