Can i go after my daughters father for back child support and she turns 18.?

ughter turned 18 this past april, thats when child support ended. then he has the nerve to tell me (kind of like a slap in the face thing for him) that he lied all these years about his hourly wages, that in fact he only made $12 an hour for the first year, (he was suppose to report any and all raises or promotions) after which he got promoted and a big raise. so he was making almost triple the $12. that extra money could of made a huge difference in my daughters childhood. where we had to scrimp and sc and go without alot, we could of maybe kept our heads above poverty. cause thats how we lived. but we never complained my daughter is a trooper.