Koch Chemie No Yellow Cleaner for Gelcoat Yellowing & Algae | Fort Myers

No Yellow Cleaner is the dilutable Koch Chemie Marine cleaner for yellowing and yellowish algae on gelcoat, plastic, and paint—foredeck, waterline, exhaust area, and transom. Neutral enough that Koch notes plastics, stainless, and aluminum are not attacked when used as directed—critical around Southwest Florida waterlines.

Features / Why Pros Use It

• Removes yellowing and yellowish algae on gelcoat, plastic, and paint
• Effective on foredeck, water pass, exhaust soot/rust areas, and transom
• Use neat or dilute 1:4; neutral formulation friendly to plastic, stainless, aluminum
• Not for galvanized surfaces or real wood

How to Use

• Apply undiluted or dilute 1:4 with water
• Apply, dwell briefly, agitate with a pre-wash brush if needed, then rinse
• Can be mixed in a wash bucket for waterline and exhaust zones
• Do not allow to dry; avoid galvanized metal and real wood

Shop Koch Chemie Marine at MDSC

Marine Detail Supply Co. stocks the full Koch Chemie Marine Line for professional boat detailing across Fort Myers and Southwest Florida. Pick up at HQ — 14231 Jetport Loop West, Suite 13, Fort Myers, FL 33913 — or order for same-day shipping when you qualify. Ask our team about pads, machines, and the right cut level for your gelcoat or paint correction job.

• FREE Shipping on all domestic U.S. orders over $200
• Orders under $200 ship for a flat rate of just $7
• Same-Day Shipping on orders placed before 2:00 PM ET, Monday–Friday (business days)
• Most items ship UPS Ground or USPS Priority Mail. Hazardous materials (flammable, corrosive or oxidizer products) ship UPS Ground only and are not eligible for USPS, expedited, overnight or air shipping.
• Discounted UPS overnight rates available on non-hazardous items
• Questions? Call us at 800-248-6130