White Spots in Tank

[griffindad]

I'm getting white spots showing up all over the inside of my tank. They are pretty hard and need to be scrapped off. Does anyone know what they are?

 

[k-rok]

I have them too - I believe they are calcium deposits. I don't know where they come from or why they form but I believe they are fairly normal. I have been meaning to learn more about them myself.

 

[grips]

Are they in the shape of a spiral? If so, they are tiny worms. I had them when I first started my aquarium and they eventually just went away. From what I understand, they thrive in an aquarium with a high amount of calcium.
If they aren't in the shape of a spiral, then I don't know.
Snail eggs?

 

[griffindad]

No, they are not spiral, they are round bumps. They are showing up inside my filter as well as the inside of the tank, so I would not think they are eggs.