Hi
I live on the Magothy off the Chesapeake and we're experiencing a "mahogany tide" (prorocentrum minimum--an algae). Due to low tides and lots of use, I left the boat in the water for 2 days (off the lift). Now the hull is tea-stained below the waterline. Neighbor told me it's the "Magothy mustache." Although in 8 years, first time I've had this happen.
It's only on the white part of the hull (which is gelcoat not paint, right?), but the area just above the staining is midnight blue imron.
I've read that the normal oxalic acid treatments (MaryKate's On&Off) are not good for the Imron -- so I'd take pains to make sure it stays clear. Moreover, I've heard that these cleaners degrade the gelcoat with each use. One article suggested that Interlux Heavy Duty Stain Remover (gel) is safe for painted surfaces.
What's the best way to get rid of the staining without harming the gelcoat & paint?
Cheers
Larry
I live on the Magothy off the Chesapeake and we're experiencing a "mahogany tide" (prorocentrum minimum--an algae). Due to low tides and lots of use, I left the boat in the water for 2 days (off the lift). Now the hull is tea-stained below the waterline. Neighbor told me it's the "Magothy mustache." Although in 8 years, first time I've had this happen.
It's only on the white part of the hull (which is gelcoat not paint, right?), but the area just above the staining is midnight blue imron.
I've read that the normal oxalic acid treatments (MaryKate's On&Off) are not good for the Imron -- so I'd take pains to make sure it stays clear. Moreover, I've heard that these cleaners degrade the gelcoat with each use. One article suggested that Interlux Heavy Duty Stain Remover (gel) is safe for painted surfaces.
What's the best way to get rid of the staining without harming the gelcoat & paint?
Cheers
Larry