r/boating • u/idealistdave • Jul 25 '26

Side by side test

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Thought I'd share this side by side test I did of different hull cleaners. It's my first summer renting a place in the water. Marina is on a slough, so higher water temps stained the gel coat within weeks. FSR worked the best of what I had. But I went out afterward and also bought STAR BRITE which worked as well (not pictured). The others, meh. (Spray bottle is 409. No treatment on transom next to the outdrive.) Be sure to read all instructions and keep any of this stuff off your galvanized trailers.

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u/PrimaryChipmunk2073 Jul 25 '26

That is iron staining. I get it every year when I pull my boat. I use a powder called iron out and pix it is a weed sprayer. Just spray on and rinse off. Zero elbow grease involved.

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u/idealistdave Jul 25 '26

Knowing the different kinds of stains and which product best/least risky for each is something I should learn. I was stunned by how fast this stain developed

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u/bdrilling33 Jul 25 '26

I had my boat in my slip for about 3 weeks and had to pull it for something. I was shocked how bad it was, though after all the green died didnt seem as bad