---
product_id: 63143932
title: "Marine Biodegradable Descaler (4, Gallon Bottle)"
brand: "rydlyme"
price: "AR$975610"
currency: ARS
in_stock: true
reviews_count: 8
category: "Rydlyme"
url: https://www.desertcart.com.ar/products/63143932-marine-biodegradable-descaler-4-gallon-bottle
store_origin: AR
region: Argentina
---

# Quick 2-4 hour circulation Dissolves scale fast 100% biodegradable formula Marine Biodegradable Descaler (4, Gallon Bottle)

**Brand:** rydlyme
**Price:** AR$975610
**Availability:** ✅ In Stock

## Summary

> 🌊 Scale-free seas ahead—descend into effortless marine maintenance!

## Quick Answers

- **What is this?** Marine Biodegradable Descaler (4, Gallon Bottle) by rydlyme
- **How much does it cost?** AR$975610 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/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

- • **Customizable Strength:** Dilute 1:1 for heavy-duty descaling or 1:3 for routine upkeep—precision cleaning at your fingertips.
- • **Time-Smart Circulation:** Small units cleaned in just 2 hours, large units in 4—get back on the water faster.
- • **Eco-Friendly Powerhouse:** Concentrated, biodegradable, non-toxic, and non-corrosive—safe for you and the environment.
- • **Rapid Scale Annihilation:** Effortlessly dissolves calcium, lime, rust, barnacles, and mussels for pristine marine systems.
- • **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 solution designed to quickly and effectively dissolve tough marine scale deposits like calcium, lime, rust, barnacles, and mussels. Safe for various marine systems including cooling units and heat exchangers, it offers flexible dilution ratios for both heavy and routine cleaning, with fast circulation times of 2 to 4 hours. Trusted by professionals and boat owners alike, it combines powerful performance with environmental responsibility.

## Description

Buy RYDLYME Marine Biodegradable Descaler (4, Gallon Bottle) on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Great Product for older outboards - This is a great product. I removed years of residue one the inside of my outboard.
Review: It works - Very effective at remove scale from the internals of the outbound cooling system.

## 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 |
| Best Sellers Rank | #186,024 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #221 in Boat Cleaners |
| Customer Reviews | 4.7 4.7 out of 5 stars (77) |
| Date First Available  | May 7, 2018 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | RYM04 |
| Manufacturer  | Apex Engineering Products Corporation |
| Material Feature  | Biodegradable Warning |
| Product Dimensions  | 13 x 13 x 13 inches; 38 Pounds |

## 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 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.

### ⭐⭐⭐⭐⭐ It works
*by Y***R on November 12, 2025*

Very effective at remove scale from the internals of the outbound cooling system.

### ⭐⭐⭐⭐⭐ Works awesome
*by M***Y on September 9, 2025*

Works awesome on flushing out my outboard engine. I mixed it 50-50 with water and ran it through my engine using a pump and I got rid of all the deposits inside the engine cooling system. It also worked great on cleaning my glass shower door to remove the water spots.

## 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

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-01*