META Name REFRESH
By using this tag you are able to define after how long a page has to be refreshed or after a certain period of seconds you want your visitor to be redirected to another webpage. Search engines usually don’t like it when you use refresh pages. A better solution is to add a clickable link.
It can influence your ranking in a negative way by using this tag the wrong way!
< meta http-equiv="refresh" content="30; ,URL=http://www.yourdomain.com">
You may add this REFRESH meta tag to all of your webpages, so not only in the first index page. Make sure that on every page relevant meta tags are added.