I just got a new tank delivered 75 litres and came with most things. Dont know if its glass or what but online i read its fibre glass but its not what i would say fibre glass looks like anyway. front and back have see through lines all over the place. when i rub the tank they go away then in seconds they return. i just put water in there and i see all these lines..
Will they go away once tank heats up?
Can i get rid of these lines?
i would post pics but dont know how on this forum.
