Aquatech Marine Rust & Stain Remover Gel dissolves rust streaks, hard water stains, and other stubborn marks from gelcoat, marine paint, and metal — without the damage that comes from aggressive acid cleaners. The thick gel formula clings to vertical surfaces instead of running off, giving it time to break down stains from the inside out. Lab-tested on polyurethane yacht finishes to preserve gloss and hardness.

What it does

Dissolves rust streaks, hard water stains, and mineral deposits on marine surfaces
Gel formula stays in place on vertical hulls, transoms, and metal fittings
Safe on gelcoat, marine paint, and metal (lab-tested on polyurethane yacht finishes)
Preserves paint gloss and hardness
Slows the return of hidden stains beneath the surface
No scrubbing required on fresh stains

Specifications

Spec	Detail
Surfaces	Gelcoat, marine paint, polished and painted metal, stainless steel
Formula	Thick gel, non-runoff
Dwell time	2–5 minutes
Stain types	Rust streaks, hard water, mineral deposits, tannin
Safety tested on	Polyurethane yacht finishes
Application	Direct-to-stain, no dilution
Made in	USA

How to use

Rinse the surface to remove loose dirt.
Apply gel directly to the stained area, ensuring full coverage.
Let sit for 2–5 minutes (longer for heavy stains).
Agitate lightly with a soft brush or wash mitt if needed.
Rinse thoroughly with fresh water.
Repeat for deep-set stains.

Pairs with

Use Aquatech Wash Mitt for gentle agitation. Follow with Aquatech Premier Polish or Polishing Compound to restore gloss to treated areas.

Good to know

Not recommended for anodized aluminum or uncoated magnesium
Test on an inconspicuous spot first
Use gloves; avoid contact with fabric upholstery and eyes
Keep off glass — use Aquatech Water Spot Remover there instead

Marine Rust & Stain Remover Gel

Available Options