How do you remove calcium deposits?

[mrcobrajet]

How do you remove calcium deposits from your fish tank lids? Does any know a safe way to, so your fish are safe? Any fish safe chemicals?
THANX

 

[Fishmanic]

search is your friend
http://www.fishforums.net/threads/calcium-deposits.66601/

 

[Colin_T]

vinegar or a single sided razorblade

 

[AbbeysDad]

If the tank is full, +1 on white vinegar and a single edged razor blade.
If the tank is empty any acidic type product - CLR comes to mind - just rinse well after.
In either case, a measure of elbow grease goes a long way.

 

[KrystaK]

Having just emptied and cleaned my 30 gal a few weeks ago I can confirm vinegar is awesome. I put some in a spray bottle and sprayed it on the calcium deposits - they started to fizz almost like when one add's baking soda to vinegar. Instead of using a razor blade I let the vinegar sit on the deposits for a few minutes and then just took a rough scouring pad and scrubbed the residue off.