According to the sandbox effect, Google temporarily reduces the page rank of new domains, placing them into what is referred to as its "sandbox", in an effort to counter the ways that search engine optimizer attempt to manipulate Google's page ranking by creating lots of inbound links to a new web site from other web sites that they own.A "reverse sandbox" effect is also claimed to exist, whereby new pages with good content, but without inbound links, are temporarily increased in rank—much like the "New Releases" in a book store are displayed more prominently—to encourage organic building of the World Wide Web.
what you mean one site will be in hard time if the website is sent to sandbox. Then how to check if one website is fall into sandbox, how long it will be?