Jesus Murphy, How did it get so high!

[Aquattro]

I'd question that result. Retest, or try another kit. at that level, I would expect it to precipitate from solution.

[christyf5]

what test kit are you using?

[Brandon5555]

API Calcium test kit.

[Chin_Lee]

check your Alk and Mg too.
IF your alk or Mg is not in proper proportions, its probably not using the calcium up properly hence the higher readings.

[kien]

I don't know who Jesus Murphy is but he sure put a lot of calcium in your tank.. Although I too would question that result. It would be worth while to get a second opinion at least. Borrow someone's test kit (of a different brand perhaps), and test to verify the result.