Safe to touh an aluminum boat trailer or stainless boat prop?

It's safe on aluminum outboard powerheads so I'm sure it's safe on a aluminum trailer and it won't harm the stainless prop at all

Can it be used in indoor plumbing

Well depends on problem , drain clog no won’t work . But if you have a plumbing coil that has mineral scale from hard water yes it will work . Also any water system closed loop style will clean internal deposits like a heating coil on boilers . Good luck

Is this safe for plastic and the pads of an evaporative cool?

This product is safe on plastic. For an industrial application, we would recommend using our Industrial Descaler, RYDLYME. https://www.apexengineeringproducts.com/product/rydlyme-biodegradable-descaler/

I used it to flush a hot water heater. Two weeks later the hot water smells while the cold water doesn't. How long does the smell / odor last?

Usually a smell from a water heater means the anode rod, has gone bad. You can flush it many times. It will only come back…. Change the rod.

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RYDLYME Marine Biodegradable Descaler (1, Gallon Bottle)

RYDLYME Marine Biodegradable Descaler (1, Gallon Bottle)

Product ID: 70268466

Details

Brand
RYDLYME
Item Form
Liquid
Material Feature
Biodegradable
Scent
Lemon
Specific Uses For Product
Boat Engine

⚡Dissolves scale in 2-4 hrs

🌿100% biodegradable & non-toxic

🛠️Safe on most metals except zinc/magnesium

3169 kr

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Description

🌊 Clean smarter, sail faster—ditch the scale, not the planet!

ECO FRIENDLY POWER - Concentrated, biodegradable formula that’s tough on calcium, lime, rust, barnacles, and mussels but gentle on the environment.
METAL SAFE FORMULA - Non-corrosive and safe on virtually all metals except zinc and magnesium, ensuring longevity of your marine equipment.
CUSTOMIZABLE DILUTION - Adjust dilution from 1:1 for heavy scale to 1:3 for routine maintenance—precision cleaning tailored to your needs.
VERSATILE APPLICATION - Perfect for cooling systems, heat exchangers, condensers, and more—your all-in-one marine descaling solution.
RAPID SCALE DISSOLUTION - Circulate for just 2 hours on small units, 4 hours on large—fast, effective cleaning that keeps your marine systems peak performing.

RYDLYME Marine Biodegradable Descaler is a concentrated, eco-friendly liquid solution designed to rapidly dissolve calcium, lime, rust, barnacles, and mussels in marine cooling systems and heat exchangers. Safe on most metals except zinc and magnesium, it offers customizable dilution ratios for both severe scale removal and routine maintenance, circulating in just 2 to 4 hours for efficient cleaning. This biodegradable, non-toxic, and non-corrosive formula ensures powerful performance without compromising environmental responsibility.

Specifications

ASIN	B07BYYYQLY
ASIN	B07BYYYQLY
Best Sellers Rank	#23,848 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #58 in Boat Cleaners
Brand Name	RYDLYME
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (340)
Date First Available	May 7, 2018
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
Model Number	RYM04
Number of Items	1
Package Dimensions	13 x 13 x 13 inches; 38 pounds
Part Number	RYM01
Recommended Uses For Product	AC Units, Condensers, Coolers, Marine Engine Cooling Systems, Heat Exchangers, Seawater systems, Tube Bundles
Scent	Lemon
Size	128 Ounce (Pack of 1)
Special Features	Concentrated
Specific Uses For Product	Boat Engine Flush
Surface Recommendation	Engines
UPC	635238000227
Unit Count	128 Ounce

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3169 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Denmark.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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