Hi all, I have a few galvanised water tanks like this which I'm using to store outside rain water.
Now some of the insides have rusted up considerably, will the water still be ok to use for watering plants and to fill the odd kettle occasionally?
Is there something I can paint over the top of the rusted surface after removing the rust, to get it in good condition, or will this be harmful ? Keep in mind I intend to keep water in it at all times, so I wouldn't want whatever I paint on to leach into the water.
Thanks for any help and information