Browse Forums DIY, Home Maintenance & Repair 1 Jun 19, 2021 9:25 pm my pool is about 2 years old now. it is a infinity pool. outside of the wall of the pool, the white color stuff started to emerge and it gets bigger and longer. I wonder if anyone here would know what this stuff is and how to get rid of it safely? thanks Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Depends how much direct sun it gets. Is there any shading (eaves or trees)? If the sun hits a window directly it doesn't matter too much if it's double or single… 1 12671 9 24816 Congratulations! Nice to put that to bed before christmas, now you can relax 3 7185 |