credit card arbitrage

Hi,

I have a credit card with zero percent interest for 20 months with an available balance of 5k+. How can I invest this capital to make the most return that is low risk?

I buy and sell stocks and bonds and recently opened a foreign exchange account with Oanda.

I think I know a lot about investing, but I know there is someone(like you) that knows more than me.

How can I invest this capital to make the most return that is low risk?

Thanks,

Chad