need help with my aquarium glass

[Niks]

hi guys i have baby arowana and also do a weekly watter change but my aquarium glasss has some weird spots
i just wanted tio know y is it still there even though i cleaned the tank and scrubbed the glasss
i might not be able to explain my self in the way i am supposed to
this pic might help u guys understand

 

[joe jaskot]

Looks like hard water spots on the exterior of the tank. Try wiping glass with vinegar.

 

[cancanbaji]

Looks like hard water spots on the exterior of the tank. Try wiping glass with vinegar.

x2

 

[nirman]

hi guys i have baby arowana and also do a weekly watter change but my aquarium glasss has some weird spots
i just wanted tio know y is it still there even though i cleaned the tank and scrubbed the glasss
i might not be able to explain my self in the way i am supposed to View attachment 860105
this pic might help u guys understand

Try to wipe it with news paper, when it's wet.

 

[Nithin]

this is helpful for smudges and other spots..these are caused by usage of hard water...

Sent from my GT-S5360 using MonsterAquariaNetwork App

 

[Dinodude]

hard water....

 

[baji]

try vinegar

 

[evilobster]

+1 with the vinegar, i find its more useful in breaking down the hard water marks than glass cleaner. i use the same trick on my car windshield

 

[PatrickYan]

Vinegar gd for removing watermark

 

[Smart1]

Most dont know that Oxyclean is aquarium safe and is great for getting this crap off of glass. ;D

Sent from my DROID RAZR using MonsterAquariaNetwork App