---
product_id: 731890428
title: "RYDLYME Marine Biodegradable Death Collar, 4 Gallon"
brand: "rydlyme"
price: "S$59302"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/731890428-rydlyme-marine-biodegradable-death-collar-4-gallon
store_origin: SG
region: Singapore
---

# 100% biodegradable & eco-friendly Fast action: 2-4 hours to dissolve scale Concentrated formula for powerful cleaning RYDLYME Marine Biodegradable Death Collar, 4 Gallon

**Brand:** rydlyme
**Price:** S$59302
**Availability:** ✅ In Stock

## Summary

> 🌊 Clean smarter, not harder — marine scale doesn’t stand a chance!

## Quick Answers

- **What is this?** RYDLYME Marine Biodegradable Death Collar, 4 Gallon by rydlyme
- **How much does it cost?** S$59302 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/731890428-rydlyme-marine-biodegradable-death-collar-4-gallon)

## 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

- • **Safe on Metals:** Gentle on metals except zinc and magnesium, preserving your marine engine integrity
- • **Customizable Dilution:** Flexible 1:1 to 1:3 water dilution ratios for powerful cleaning or routine maintenance
- • **Versatile Application:** Perfect for cooling systems, heat exchangers, and A/C condensers without corrosion risk
- • **Eco-Conscious Cleaning:** Biodegradable and non-toxic formula keeps your marine systems safe and green
- • **Rapid Scale Dissolution:** Dissolves rust, lime, and marine buildup in as little as 2 hours for small units

## Overview

RYDLYME Marine Biodegradable Death Collar is a concentrated, eco-friendly descaler designed to rapidly dissolve marine scale, rust, and lime buildup in cooling systems and heat exchangers. Its fast-acting formula works within 2-4 hours depending on unit size, is safe on most metals, and offers flexible dilution for both heavy-duty cleaning and routine maintenance.

## Description

This item includes a 4 gallon individual gallon of RYDLYME Marine Biodegradable Marine Death Color Dilute this product with water and water 1:1 before use. Dilute with water until 1:3 for routine maintenance. Also available in 1 gallon quantities. This is not a ready-made product. RYDLYME Marine works most effectively when circulating through applications such as live water cooling systems, oil coolers, A/C condensers and more to remove uncomfortable marine stains. RYDLYME MARINE is virtually safe for metals and materials in water systems except zinc and magnesium. After washing the marine engine cooling system, leave the anode blank or plan for replacement. For detailed instructions, SDS, and specifications please refer to the available technical documentation below or contact product specialist for more information on www.RYDLYMEMarine.com

## Features

- Dissolves muscles, limes, rust, barbells and muscles quickly and effectively
- Concentrated, biodegradable, non-toxic, non-corrosive remover
- Application: cooling systems, heat exchangers, content etc
- Sugar 1:1 with water 7 scale 1:3 for cyclic maintenance
- Small units will shrink in only 2 hours. Large units require 4 hours

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Number | RYM04 |
| Batteries Included | No |
| Target Audience | Adult, Certified Refurbished, Marine Technicians |
| Item Volume | 4 Gallons |
| Product Dimensions | 33.02 x 33.02 x 33.02 cm; 17.24 kg |

## Product Details

- **Brand:** RYDLYME
- **Item Form:** Liquid
- **Item Volume:** 4 Gallons
- **Unit Count:** 4.00 Count
- **Special Feature:** Concentrated
- **Number of Items:** 1
- **Item Weight:** 17.24 kg
- **Contains Liquid Contents:** Yes
- **Manufacturer:** Apex Engineering Products Corporation
- **UPC:** 635238000234

## Images

![RYDLYME Marine Biodegradable Death Collar, 4 Gallon - Image 1](https://m.media-amazon.com/images/I/71D6Wkd+r9L.jpg)
![RYDLYME Marine Biodegradable Death Collar, 4 Gallon - Image 2](https://m.media-amazon.com/images/I/81armjTUg9L.jpg)
![RYDLYME Marine Biodegradable Death Collar, 4 Gallon - Image 3](https://m.media-amazon.com/images/I/81VDh3aKWoL.jpg)
![RYDLYME Marine Biodegradable Death Collar, 4 Gallon - Image 4](https://m.media-amazon.com/images/I/81okm2HesQL.jpg)
![RYDLYME Marine Biodegradable Death Collar, 4 Gallon - Image 5](https://m.media-amazon.com/images/I/912e9iZBOnL.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.

## 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 Singapore*
*Store origin: SG*
*Last updated: 2026-02-07*