Aw thank you thank... I will take a look when i get home.....well the reason i am using the 55 g cos it was given to me plus it a good size for where i will be using it. you can view the progress here: 1. i had build a waterfall but was not WOW enough for me so i have decided to take on this project, anyways you can veiw why i have limited space: I will most likey finish the wall modifications by this weekend. http://develop.webheadgroup.com/naca...in/default.htm and thanks for the welcome