white film

[bruha101]

I have an old tank that my grandfather gave to me and I would really like to set it up... However it had white film on the outside of the tank and it will not come of with any cleaning supplies/vinegar... the used well water in the tank before he gave it to me so I would assume its lime or something like that any suggestions as to what will take this off that will not harm the fishor plants? Any ideas would be appreciated. Thanks

 

[neilanh]

Glass tank? Give a light rubbing with a razor blade a go and see if that'll scrape it off. (don't do this if it's acrylic)

 

[bruha101]

Yes it is glass and I tried a razor blade as well it did remove some of it but it will not come off.... its really on there good. My grandfather had it set up for years and I don't believe he ever cleaned the outside on the back so I have no idea how long its been on there but the razor blade didn't work either

 

[Tim Wheatley]

Could it be some kind of (at one time) clear adhesive used to stick a background? If so you might want to consider a product like goo gone as long as you make sure to use it on the outside of the tank only.