They are not long enough- you will need part 3000.244 which includes longer screws for this application. I will see if I can post a pic but this topic has been covered here a few times. I think their is a 3-4 page thread on it called Stream Mounting Hardware- try a search and if you can't find it I will post more tomorrow. I did a photo rich thread on all the possibilities and all the accesories for each tank brand and style.