Does anyone know when h20 series 3 and 4 are coming out watched some on youtube but where do you buy the dvd?

hey I'm also a big H2O fan and here is a site where you can download the episodes for free (or just watch them). you can also see the episodes of gossip girl,hannah montana, and many more. Have fun
XOXO Lotte
here is the site:
link

H2o just add water season 3 will come out sometime in the next few months on dvd.
Hope this helped