# MA5X Boat Hull Cleaner - Marine Stain & Rust Remover

**MA5X Boat Hull Cleaner - Marine Stain & Rust Remover**

Revitalize your boat's appearance with the **MA5X Boat Hull Cleaner**. Our concentrated, professional-grade phosphoric acid formula effortlessly tackles stubborn waterline stains, rust, algae, barnacle residue, and yellowing that ordinary soap leaves behind. Experience heavy-duty marine cleaning power without the harsh, toxic fumes of traditional hydrochloric acid cleaners.

**Why Choose MA5X?**

-   **Exceptional Value:** Our highly concentrated formula means one bottle goes significantly further than standard ready-to-use alternatives.
    
-   **Tough on Marine Buildup:** Specifically targets and dissolves alkaline buildup, scum, and rust.
    
-   **Safer Fume Profile:** Delivers commercial-strength cleaning without the overwhelming fumes of hydrochloric acid.
    
-   **Eco-Conscious:** Non-flammable and completely biodegradable.
    

**Safe for Multiple Surfaces** Formulated for both fresh and saltwater environments, it rinses clean with minimal streaking. Ideal for use on:

-   Fiberglass & Gel Coat
    
-   Painted Hulls
    
-   Lower Units
    
-   Marine Trailers
    

**How to Use**

-   **For Heavy Rust & Marine Growth:** Apply the concentrate directly to a cool, dry surface using an acid-resistant sprayer or brush. Allow up to 10 minutes of dwell time, then rinse thoroughly with fresh water.
    
-   **For Routine Maintenance (Light Stains):** Dilute 1 part concentrate to 4–5 parts water.
    
-   _Note: Always test on a small, inconspicuous area first. Avoid prolonged contact with bare metals and sensitive coatings._
    

**Safe Handling & Warnings (Required)** **⚠️ DANGER:** This product is a phosphoric acid solution (pH 1–3) and causes serious eye damage and skin irritation on contact.

-   Always wear rubber gloves and eye protection when handling.
    
-   Avoid breathing mist or spray.
    
-   **Keep out of reach of children.**
    
-   _First Aid:_ If eye contact occurs, rinse continuously with water for at least 15 minutes and seek medical attention immediately. Do not mix with alkaline products or store near oxidizers.
    

## . [View the full Safety Data Sheet (SDS)](https://cdn.shopify.com/s/files/1/0790/3264/7984/files/Hull_Cleaner_SDS_03-06-2024.pdf?v=1710858352).

**Made in the USA. Available in 32 oz and 1 gallon.**

Marine detailers, boatyards, and fleet service operations can order Hull Cleaner in a 55-gallon drum through our [Bulk & Wholesale](https://ma5x.com/collections/bulk-wholesale) collection.

## Details

- **Price:** 15.99 USD - 32.99 USD
- **Vendor:** MA5X®
- **Type:** Marine Cleaner
- **Tags:** MA5X(R), Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 32 Ounce | 15.99 USD | In stock |
| 1 Gallon | 32.99 USD | In stock |

## Images

- MA5X Boat Hull Cleaner - Marine Stain & Rust Remover
- MA5X Boat Hull Cleaner - Marine Stain & Rust Remover
- MA5X Boat Hull Cleaner - Marine Stain & Rust Remover
- MA5X Boat Hull Cleaner - Marine Stain & Rust Remover
- MA5X Boat Hull Cleaner - Marine Stain & Rust Remover
- MA5X Boat Hull Cleaner - Marine Stain & Rust Remover

## Additional Information

- **Cargo Denim, Pants:** MA5X Boat Hull Cleaner - Marine Stain & Rust Remover

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> Source: [Gift From The Land](https://giftfromtheland.shop/products/ma5x-boat-hull-cleaner-marine-stain-rust-remover)
> Updated: 2026-09-03