Starbrite Instant Hull Cleaner Gel Spray - 1L Trigger Spray

It is highly effective against waterline stains, algae, scum lines, and general marine grime.

Yes, it is formulated without harmful acids and is safe for fiberglass and gelcoat when used as directed. Always test in an inconspicuous area first.

The gel formula is designed to minimize or eliminate the need for scrubbing. For very tough stains, gentle agitation with a soft brush may help, but aggressive scrubbing is generally not required.

Allow the gel to dwell for 5 to 15 minutes, depending on the severity of the stains. Do not let it dry completely on the surface.

While it targets surface stains, it is not designed as an antifouling treatment. It can be used on antifouled hulls to clean waterline stains, but avoid prolonged contact that could affect the antifouling paint's integrity.

Rinse thoroughly with plenty of fresh water. A hose with good pressure is recommended to ensure all cleaner residue is removed from the hull surface.

The gel's effectiveness may be reduced in very cold temperatures. It is best used in moderate to warm conditions for optimal performance.

For stubborn or older stains, a second application may be necessary. Allow the gel to dwell for a longer period, and consider gently agitating with a soft brush before rinsing.

Ensure the hull surface is dry before application. The gel formula should cling; if it's running, the surface may be too wet or the temperature too cold, affecting viscosity.

Ensure the hull is rinsed thoroughly with plenty of fresh water. Excessive product left on the surface can leave a slight residue. A second rinse may be needed.

Rinse the nozzle under warm water. If the clog persists, remove the nozzle and soak it in warm water. Ensure the intake tube is submerged when spraying.