Captain Johns Boat Brite is for removing staining from fiberglass hulls caused by algae and brackish water. It works by spraying the Algae & Waterline Stain Remover onto the fiberglass surface, then just after a few seconds, simply wipe stain away then rinse with water.
The picture is of a boat which is dry sailed but had been sitting in the water for a weekend. You can clearly see the staining from the brackish water, with a cleaned area in contrast to the stained fiberglass. Watch the following video of this hull being cleaned.
Apparently Boat Brite is bio-degradeable, non-toxic and safe for the environment. This comment from Practical Sailor; “The most eco-friendly product tested was Captain John’s Boat Brite Algae and Waterline Stain Remover”
Boat Brite is expensive at $20 for 32oz, but works quickly and your conscience is clean.
Boat Brite waterline Stain Remover may streak antifouling paint but will not remove paint or compromise its performance.
Captain John’s Boat Brite Algae and Waterline Stain Remover does removed wax, so following with a quick cleaner-wax will help keep the stains from coming back quickly.
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