--- product_id: 63143932 title: "Marine Biodegradable Descaler (4, Gallon Bottle)" brand: "rydlyme" price: "1859 zł" currency: PLN in_stock: true reviews_count: 8 category: "Rydlyme" url: https://www.desertcart.pl/products/63143932-marine-biodegradable-descaler-4-gallon-bottle store_origin: PL region: Poland --- # Quick 2-4 hour circulation 100% biodegradable & non-toxic Dissolves calcium, lime, rust fast Marine Biodegradable Descaler (4, Gallon Bottle) **Brand:** rydlyme **Price:** 1859 zł **Availability:** ✅ In Stock ## Summary > 🌊 Clean smarter, sail stronger—ditch the scale, not the adventure! ## Quick Answers - **What is this?** Marine Biodegradable Descaler (4, Gallon Bottle) by rydlyme - **How much does it cost?** 1859 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/63143932-marine-biodegradable-descaler-4-gallon-bottle) ## Best For - rydlyme enthusiasts ## Why This Product - Trusted rydlyme brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Friendly Formula:** Concentrated, biodegradable, and non-corrosive—safe for you and the environment. - • **Customizable Strength:** Dilute 1:1 for heavy scale or 1:3 for routine upkeep—precision cleaning at your fingertips. - • **Fast-Acting Efficiency:** Circulate for just 2 hours on small units or 4 hours on large units—get back on the water faster. - • **Powerful Scale Annihilator:** Effortlessly dissolves calcium, lime, rust, barnacles, and mussels for pristine marine engines. - • **Versatile Marine Maintenance:** Perfect for cooling systems, heat exchangers, condensers, and more—one product, endless uses. ## Overview RYDLYME Marine Biodegradable Descaler is a concentrated, eco-friendly liquid solution designed to quickly and effectively dissolve tough marine scale buildup including calcium, lime, rust, barnacles, and mussels. Ideal for cooling systems and heat exchangers, it offers customizable dilution ratios for both severe and routine maintenance, with fast circulation times of 2 to 4 hours. Safe, non-toxic, and biodegradable, it’s the go-to descaler for professional-grade marine engine care. ## Description Buy RYDLYME Marine Biodegradable Descaler (4, Gallon Bottle) on desertcart.com ✓ FREE SHIPPING on qualified orders Review: Great cleaning product - Worth the money. Do it if you love your boat and motor! Review: Great Product for older outboards - This is a great product. I removed years of residue one the inside of my outboard. ## Features - DISSOLVES CALCIUM, LIME, RUST, BARNACLES AND MUSSELS QUICKLY AND EFFECTIVELY! - CONCENTRATED, BIODEGRADABLE, NON-TOXIC, AND NON-CORROSIVE DESCALER! - APPLICATIONS INCLUDE: COOLING SYSTEMS, HEAT EXCHANGERS, CONDENSERS AND MORE! - DILUTE 1:1 WITH WATER FOR SEVERE SCALE AND 1:3 FOR PERIODIC MAINTENANCE! - CIRCULATE JUST 2 HOURS FOR SMALL UNITS, 4 HOURS FOR LARGE UNITS! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CPKVY3T | | ASIN | B07CPKVY3T | | Best Sellers Rank | #93,025 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #162 in Boat Cleaners | | Brand Name | RYDLYME | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.6 4.6 out of 5 stars (81) | | Date First Available | May 7, 2018 | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Volume | 4 Gallons | | Item Weight | 38 Pounds | | Item model number | RYM04 | | Manufacturer | Apex Engineering Products Corporation | | Manufacturer | Apex Engineering Products Corporation | | Material Feature | Biodegradable Warning | | Material Features | Biodegradable | | Number of Items | 1 | | Product Dimensions | 13 x 13 x 13 inches; 38 Pounds | | Scent | Almond | | Special Features | Concentrated | | Specific Uses For Product | Boat Engine Flush | | Surface Recommendation | Engines | | UPC | 635238000234 | | Unit Count | 215.0 Ounce | ## Product Details - **Brand:** RYDLYME - **Item Form:** Liquid - **Material Feature:** Biodegradable - **Scent:** Almond - **Specific Uses For Product:** Boat Engine Flush ## Images ![Marine Biodegradable Descaler (4, Gallon Bottle) - Image 1](https://m.media-amazon.com/images/I/71D6Wkd+r9L.jpg) ## Questions & Answers **Q: I used a 3gpm water transfer pump that ran fine for about 10 minutes but then lost it's prime & started smoking. What have you used successfully?** A: I used an inexpensive 1100 GPH submersible Bilge Pump (Brand was Maxzone) hooked up to a 12 volt battery. Ran it for 4 hrs. +, worked great, and pump still works like new! **Q: can you dilute this and pour directly into thermostat housing of a Yamaha 150 OB? I can't take my boat out of the water** A: Yes, manufacturer recommends 1:1 dilution with clean water. Static cleaning may require additional time for cleaning, typically 1-2 hours, may require 3 hours at most. **Q: can you dilute this to 1-1 and pour directly into thermostat housing? I can't take my boat out of the water** A: Yes. You didn’t say what type of motors you have? I made a setup to do a close loop system. Remove your thermostats and reinstall housing. Connect a hose or tubing to thermostat housing and run it to a bucket with a small 1/4 hp water sump pump in a bucket or a 30 gallon trash can is what I used with cleaner solution and then connect a hose to the out flow and run that to the bucket so you can get a full circulation through your cooling system. This set up is I used when I can’t run the motors. Don’t by the pump kit they sell. It’s junk. The pump is way to inefficient. The cleaner works really well . Only takes about 30 minutes. You can run longer time but You will be amazed how much crap comes out in a short time. You will need to completely flush the cooling system with clean water after you are done. Install new thermostats. Thermostats are cheap. Don’t try and just clean the old ones. If you have outboards and can take boat out of the water that’s the easiest way. I have a tank that I can lower my motors in and pour the cleaner solution in the tanks but I still remove the thermostats and reinstall the thermostat housings and run the motors for about 5-10 minutes. I do this every 50 hours or so. I run my boat in saltwater. You need to watch your temperature gauges constantly so you don’t over heat the motors. The water in the tanks will get hot. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great cleaning product *by M***S on January 7, 2026* Worth the money. Do it if you love your boat and motor! ### ⭐⭐⭐⭐⭐ Great Product for older outboards *by A***R on December 31, 2025* This is a great product. I removed years of residue one the inside of my outboard. ### ⭐⭐⭐⭐⭐ Works Fantastic! *by G***. on May 30, 2025* Descaled 2 diesel engines and the hvac raw water circulation system on our boat. Rydlyme removed huge amounts of scale and salt water build up. Engine raw water cooling passages are now free of obstruction and flow sea water more freely. Just as good as taking the equipment off the boat and taking it to be dipped and boiled without all that labor. We circulated Rydlyme through each system for 4 hours each. The flow rate of Rydlyme through each system was vastly better at the end of the 4 hours compared to the beginning. ## Frequently Bought Together - RYDLYME Marine Biodegradable Descaler (4, Gallon Bottle) - RYDLYME Marine Biodegradable Descaler - 1 Gallon - Superior Pump 91250 1800GPH Thermoplastic Submersible Utility Pump with 10-Foot Cord, 1/4 HP --- ## 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.pl/products/63143932-marine-biodegradable-descaler-4-gallon-bottle](https://www.desertcart.pl/products/63143932-marine-biodegradable-descaler-4-gallon-bottle) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-25*