![Is this rust or corrosion? Tried using CLR and scrubbing and it's still there. Just a tenant. Also, what would cause this? Toilet is half a year old : r/Plumbing Is this rust or corrosion? Tried using CLR and scrubbing and it's still there. Just a tenant. Also, what would cause this? Toilet is half a year old : r/Plumbing](https://preview.redd.it/lmfywvnco8841.jpg?auto=webp&s=7eba9ea736ca03518b0aa5a10f1cd29b1e37bba9)
Is this rust or corrosion? Tried using CLR and scrubbing and it's still there. Just a tenant. Also, what would cause this? Toilet is half a year old : r/Plumbing
![Old toilet with calcified crud. We've tried CLR and hard scrubbing pads but it won't come clean. Products we can use? : r/CleaningTips Old toilet with calcified crud. We've tried CLR and hard scrubbing pads but it won't come clean. Products we can use? : r/CleaningTips](https://preview.redd.it/k3sx566soin91.jpg?width=640&crop=smart&auto=webp&s=7829df543a2bc683f4d852445b2d6dbe84e5ad80)
Old toilet with calcified crud. We've tried CLR and hard scrubbing pads but it won't come clean. Products we can use? : r/CleaningTips
![Can CLR Be Used in The Toilet Tank? CLR Toilet Guide 2023 - SwankyDen | Toilet tank, Cleaning toilet tank, Diy cleaning hacks Can CLR Be Used in The Toilet Tank? CLR Toilet Guide 2023 - SwankyDen | Toilet tank, Cleaning toilet tank, Diy cleaning hacks](https://i.pinimg.com/736x/1d/c9/12/1dc912f4cce0e21fa74c4b3b6b27584b.jpg)
Can CLR Be Used in The Toilet Tank? CLR Toilet Guide 2023 - SwankyDen | Toilet tank, Cleaning toilet tank, Diy cleaning hacks
![New place needs some desperate help, does anyone know how to get rid of this? I tried CLR and let it soak then scrubbed and it didnt budge : r/CleaningTips New place needs some desperate help, does anyone know how to get rid of this? I tried CLR and let it soak then scrubbed and it didnt budge : r/CleaningTips](https://i.redd.it/ldwb3kg19qw61.jpg)