--- product_id: 2428184 title: "- Ultralife Reef Products, Red Slime Stain Remover, .71 Ounce" brand: "ultralife" price: "€ 31.35" currency: EUR in_stock: true reviews_count: 10 category: "Ultralife" url: https://www.desertcart.hr/products/2428184-ultralife-reef-products-red-slime-stain-remover-71-ounce store_origin: HR region: Croatia --- # Boosts aquarium oxygen uptake Safe for corals & macro-algae Treats up to 300 gallons - Ultralife Reef Products, Red Slime Stain Remover, .71 Ounce **Brand:** ultralife **Price:** € 31.35 **Availability:** ✅ In Stock ## Summary > 🌊 Clear your reef, not your schedule — the ultimate red slime remover! ## Quick Answers - **What is this?** - Ultralife Reef Products, Red Slime Stain Remover, .71 Ounce by ultralife - **How much does it cost?** € 31.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/2428184-ultralife-reef-products-red-slime-stain-remover-71-ounce) ## Best For - ultralife enthusiasts ## Why This Product - Trusted ultralife brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Reef-Safe Formula:** Protects corals, invertebrates, fish, and beneficial bacteria—no harmful algaecides included. - • **Trusted & Time-Tested:** Highly rated by reef enthusiasts for safe, effective cyano removal without die-off. - • **Oxygen-Boosting Action:** Enhances biological digestion, increasing oxygen levels for a healthier ecosystem. - • **Powerful 300-Gallon Coverage:** One small dose revitalizes large reef tanks with ease. - • **Easy Application & Fast Results:** Dissolves quickly and clears red slime within 48-72 hours with minimal effort. ## Overview Ultralife Red Slime Stain Remover is a potent, reef-safe treatment designed to eliminate red slime cyanobacteria from aquariums up to 300 gallons. Its natural biological accelerators boost oxygen uptake and organic digestion without harming corals, fish, or beneficial bacteria. Easy to use and highly effective, it restores crystal-clear water while maintaining a balanced reef ecosystem. ## Description Ultra Life Red Slime RemoverUltraLife Red Slime Remover is a revolutionary time tested product, that will effectively and safely remove Red Slime quickly from all Coral and Invertebrates. Ultra Life RSR contains natural cellular matter, select biological accelerators and special supplements proven effective in removing Red Slime from Corals and Invertebrates and is Safe for reef tanks, corals, invertebrates, desirable macro-algae, nitrifying bacteria and fish. Ultra Life RSR will accelerate the solubilization and biological digestion of organic solids. In the process, the oxygen uptake rate in your aquarium will increase as a result of this increased biological activity. It is very important that your aquarium is able to support this increased oxygen demand along with your aquatic life`s need for oxygen. Therefore we recommend increasing your O2 levels by the addition of air stones prior to and during treatment. For best results, DO NOT turn off UV Sterilizer or Ozonize. Continuation of Protein Skimming is recommended but may require adjustment. Due to Increased biological digestion of organic solids we recommend increasing your O2 levels by the addition of air stones prior to and during treatment. No need for Water changes or Removal of Carbon Filtration. Safe for reef tanks, corals, invertebrates, desirable macro-algae, nitrifying bacteria and fish. Treats up to 300 Gallons (1135 L) Net wt. .71 oz. (20 grams) Contains NO ALGAECIDES OR ERYTHROMYCIN SUCCINATE KEEP OUT OF THE REACH OF CHILDREN FOR AQUARIUM USE ONLY WARNING: MAY EFFECT PH AND OXYGEN LEVELS Review: Took 2 doses, but cleared my tank up 100% without any die-off or irritation. - This actually took 3 doses, but I don’t count the first. The first time, I only used a half dose to be extra safe, but it did nothing. So the instructed dose is most definitely needed. The first full dose cleared maybe 80%, but there was still cyano left on the sand and partially on the rocks, so I ran the second dose 48 hours after the first as instructed, and it completely cleared up the remainder. Will it come back? Too soon to tell, but if it does, I’m not worried, seeing how effective this is. Not only did this not kill anything, but it didn’t even so much as irritate my corals or make any of them close up. Just make SURE to follow all instructions. They say to run an air stone both before and during use, so I ran an air stone about a full 24 hours before adding the formula to the tank, and kept it running the entire 96 hours during treatment. I even overdid it on the equipment just to be extra safe because I love all my fish and inverts and didn’t wanna lose anything, so I used a 100 gallon pump on the air stone when I only have a 32.5 gallon, just to be all the way on the safe side and make sure the tank was extra aerated. Overall tho, my tank is back to crystal clear, and it’s an extremely easy, cost efficient, and safe cyano resolution when used properly. Can’t go wrong here. 10/10 Review: Great product! - I'm frankly surprised that this product was so effective against a major aquarium nuisance with seemingly no drawbacks, and it is very inexpensive too. My system contains several high bioload fish (including mature adult crosshatch triggers, a huge sohal tang, a big naso tang, and a zebra eel) and non-photosynthetic corals which require frequent feeding. I always have detectable nutrients - nitrate 5ppm and phosphate .3ppm - but only recently developed a cyanobacteria problem. I'm not certain what triggered it but it quickly covered the rocks and sand, and as usual it would quickly return after physically removing it... and of course nothing eats it. I used one full vial (enough to treat 300 gallons) in my 500 gallon reef system, so I under-dosed about 40%. The odorless yellow powder discolored the water only briefly. After 24 hours about most of the cyano is gone, and so far there have been no detectible adverse effect on corals or fish. Per instructions I did NOT turn off filtration. But I did adjust the skimmer by reducing the water level and air intake, and it has pulled out quite a bit of skimmate. pH did not drop appreciably but it runs low all the time, in the range of 7.8 - 8.0, because of biopellets. I've already ordered a second vial, and will use it if there is any cyano left after 48 hours. ## Features - Country Of Origin : United States - The Package Height Of The Product Is 0.02 Inches - The Package Length Of The Product Is 0.02 Inches - The Package Width Of The Product Is 0.02 Inches ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002DKB6S | | ASIN | B0002DKB6S | | Allergen Information | Nut Free | | Best Sellers Rank | #71,951 in Pet Supplies ( See Top 100 in Pet Supplies ) #666 in Aquarium Water Treatments | | Brand Name | Ultralife | | Customer Reviews | 4.4 4.4 out of 5 stars (847) | | Date First Available | May 31, 2004 | | Global Trade Identification Number | 00790869100101 | | Included Components | all | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Type Name | Water Conditioner | | Item Weight | 9.07 g | | Item model number | 908007 | | Liquid Volume | 20 Milliliters | | Manufacturer | Ultralife Reef Products | | Manufacturer | Ultralife Reef Products | | Manufacturer Part Number | 908007 | | Model Number | 908007 | | Pet Type | Fish | | Product Dimensions | 0.02 x 0.02 x 0.02 inches; 0.32 ounces | | Target Species | Invertebrates | | UPC | 790869100101 611102106509 | ## Product Details - **Brand:** Ultralife - **Item Form:** Liquid - **Item Weight:** 9.07 g - **Liquid Volume:** 20 Milliliters - **Manufacturer:** Ultralife Reef Products ## Images ![- Ultralife Reef Products, Red Slime Stain Remover, .71 Ounce - Image 1](https://m.media-amazon.com/images/I/61YRQkksjgL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Took 2 doses, but cleared my tank up 100% without any die-off or irritation. *by E***. on April 20, 2021* This actually took 3 doses, but I don’t count the first. The first time, I only used a half dose to be extra safe, but it did nothing. So the instructed dose is most definitely needed. The first full dose cleared maybe 80%, but there was still cyano left on the sand and partially on the rocks, so I ran the second dose 48 hours after the first as instructed, and it completely cleared up the remainder. Will it come back? Too soon to tell, but if it does, I’m not worried, seeing how effective this is. Not only did this not kill anything, but it didn’t even so much as irritate my corals or make any of them close up. Just make SURE to follow all instructions. They say to run an air stone both before and during use, so I ran an air stone about a full 24 hours before adding the formula to the tank, and kept it running the entire 96 hours during treatment. I even overdid it on the equipment just to be extra safe because I love all my fish and inverts and didn’t wanna lose anything, so I used a 100 gallon pump on the air stone when I only have a 32.5 gallon, just to be all the way on the safe side and make sure the tank was extra aerated. Overall tho, my tank is back to crystal clear, and it’s an extremely easy, cost efficient, and safe cyano resolution when used properly. Can’t go wrong here. 10/10 ### ⭐⭐⭐⭐⭐ Great product! *by E***Y on March 4, 2016* I'm frankly surprised that this product was so effective against a major aquarium nuisance with seemingly no drawbacks, and it is very inexpensive too. My system contains several high bioload fish (including mature adult crosshatch triggers, a huge sohal tang, a big naso tang, and a zebra eel) and non-photosynthetic corals which require frequent feeding. I always have detectable nutrients - nitrate 5ppm and phosphate .3ppm - but only recently developed a cyanobacteria problem. I'm not certain what triggered it but it quickly covered the rocks and sand, and as usual it would quickly return after physically removing it... and of course nothing eats it. I used one full vial (enough to treat 300 gallons) in my 500 gallon reef system, so I under-dosed about 40%. The odorless yellow powder discolored the water only briefly. After 24 hours about most of the cyano is gone, and so far there have been no detectible adverse effect on corals or fish. Per instructions I did NOT turn off filtration. But I did adjust the skimmer by reducing the water level and air intake, and it has pulled out quite a bit of skimmate. pH did not drop appreciably but it runs low all the time, in the range of 7.8 - 8.0, because of biopellets. I've already ordered a second vial, and will use it if there is any cyano left after 48 hours. ### ⭐⭐⭐⭐⭐ It works! *by A***N on February 17, 2014* Another success story as in a lot of the other reviews. About three months into the tanks life (and stocking) the red cyanobacteria / hit... everywhere (rock, sand, glass). Water flow/water changes didn't help and tying to siphon it all wasn't going to work. This stuff did. Within 24 hrs there was none left and per the instructions, I did a deathblow dose after 48 hrs. Now at 72 hrs and no sign of any red cyano or a few other patches of green algae that was in there is gone. Did a water change and the tank looks outstanding. Stuff works. No effects on the corals, inverts, fish, and the sebae anemone. Make sure you mix well (it gels up when it hits water). a small cup of tank water and a small whisk. Dumped it near the circulation pump, turned the water yellow for a minute, then cleared. It did make the skimmer create some bubbles but the instructions recommend you add a air stone or increase the air to the skimmer since it helps the removal of the cyano. Recommend it if you have an outbreak. and to keep in the in case stash. ## Frequently Bought Together - Ultralife Reef Products, Red Slime Stain Remover, .71 Ounce - Chemi-Clean - 2 g - Ultralife Blue Green Slime Stain Remover --- ## 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.hr/products/2428184-ultralife-reef-products-red-slime-stain-remover-71-ounce](https://www.desertcart.hr/products/2428184-ultralife-reef-products-red-slime-stain-remover-71-ounce) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-09*