Hi, friends! Could you please suggest should i need Canonical URL for k2 if i use only one language for webiste: picaso-heating.co.uk

I test page with seomoz.com test tools and they say no canonical url defined.

I used canonical plugin with joomla content then i decided to rebuild webpage using k2, but i can not find any good extension for canonical url usage with k2. I see only one extension for 24 GBP and no way to test if it works. so there is plenty of joomla default content canonical plugins.