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?
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Exceptional Value: Our highly concentrated formula means one bottle goes significantly further than standard ready-to-use alternatives.
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Tough on Marine Buildup: Specifically targets and dissolves alkaline buildup, scum, and rust.
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Safer Fume Profile: Delivers commercial-strength cleaning without the overwhelming fumes of hydrochloric acid.
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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:
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Fiberglass & Gel Coat
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Painted Hulls
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Lower Units
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Marine Trailers
How to Use
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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.
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For Routine Maintenance (Light Stains): Dilute 1 part concentrate to 4–5 parts water.
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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.
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Always wear rubber gloves and eye protection when handling.
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Avoid breathing mist or spray.
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Keep out of reach of children.
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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).
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 collection.