TheFishGuy;3902085; said:If your plan is to have your filtration on top (which is wicked cool by the way) then why not make it a separate piece? Just use some 1x2 as cross bucks across the top that are removeable with stainless screws. All you really need is three, one in the middle and one in the middle between that one and the end. Then if you find that killer piece of drift wood or what have you then you lower the water level 50% and take off one of the cross bucks....