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dan Mindel

Member
Mar 23, 2020
32
Barrie, Ontario
Boat Info
2016 Spx 21
Engines
4.3 mercruiser sterndrive
My lake has heavy water and when I brought it out of the water at the end of the season I have really bad calcium deposits that nothing seems to take off. I used a pressure washer and CLR but it didn’t do much, anyone have something stronger I can use?
 
My lake has heavy water and when I brought it out of the water at the end of the season I have really bad calcium deposits that nothing seems to take off. I used a pressure washer and CLR but it didn’t do much, anyone have something stronger I can use?
I am a huge fan of chiefs island and the city marina in orillia do you get up there ?
 
Mary Kate’s also makes a gel, which is thicker and stays on the hull a little better, works great
That's the one I bought to clean up my dink this year. During a senior moment, I tossed the gallon jug on the rear floorboard of my Denali as it was raining, and I did not want to walk all the way to the tail gate and put it in the bed! Apparently, the screw top lid was damaged somehow, and the gel leaked out onto my carpet. It ate right through my foot mat and carpet. Nothing that a $150 order from Rock Auto could not correct. Point is this stuff should work just fine removing whatever is on the hull:).
Carpe Diem
 
It's essentially HCl acid, so just be careful - and don't smell it! But, yes, excellent stuff. If you have a galv trailer, it will stain it - use plenty of water or a plastic tarp.
 
That's the one I bought to clean up my dink this year. During a senior moment, I tossed the gallon jug on the rear floorboard of my Denali as it was raining, and I did not want to walk all the way to the tail gate and put it in the bed! Apparently, the screw top lid was damaged somehow, and the gel leaked out onto my carpet. It ate right through my foot mat and carpet. Nothing that a $150 order from Rock Auto could not correct. Point is this stuff should work just fine removing whatever is on the hull:).
Carpe Diem
Serious stuff, better neutralize the residue or anticipate a passenger going through floor boards. Baking soda paste occurs to me.
 
Don't know if it will work for you but on my toughest river water stains, I have used toilet bowl cleaner with success..
 
Muriatic acid from a big box store may be the cheapest. Zing for boats is the same thing. Wear old clothes so the splashes don’t eat holes in good pants. Also, hose down any concrete when done to prevent damage.
 
As noted, the Mary Kate comes in a gel which doesn't dry out on you. Believe it is advertised as being suitable for application while boat in water but that would be a stretch.
 

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