Stained tank

[blissville maples]

One of my poly tanks had some red mold on it, and upon cleaning the red stains do not come off and look to be in the plastic now. Wondering if anyone has successfully removed these stains. I Pressure washed and that didn't touch it or did the scrubbing?

[NhShaun]

Did you try a magic eraser? Amazed at what those things can clean off plastic that normal elbow grease doesn't seem to do anything with.

[Russell Lampron]

Just leave it there, it will go away on it's own. It takes a while but by next season it will be gone.

[lyford]

Yep to what Russ said

[Super Sapper]

You can spray a bleach solution on it and let it sit.

[blissville maples]

Never tried Magic eraser but not a bad idea.....tried bleach so it will hopefully kill some of the bacteria in the plastic. I suppose I'll find out next year, hopefully it will be gone by then as you mentioned, certainly won't hurt my feelings!

[Haynes Forest Products]

I'm surprised that the mold penetrated the poly tank surface. Is the tank that old that the surface is starting to disintegrate. I had a blue poly barrel that was all weather checked from age and used it for burning trash. If it causes problems and you want it gone you can take a spoon and sharpen the edge and scrape the plastic surface away.

[mellondome]

You can use sodium hydroxide based soaps. Same stuff used to clean r/o membranes and the base used in milking CIP cleaner (not the acid).