My pond is a 800 gl. goldie pond. I have filter pads under the lava rocks that I clean every week. I then use a shop vac and suck out the remaining gunk from the bottom of the box. I keep plants on top of the lava rock too.There is no manual. Just a piece of paper with diagrams that shows how to hook the hose from the pump and snap the weir on. the front of the box is not smooth. It has places for the weir to snap on. I think I will try to grind them off and drill some holes and attach the liner that way with the glue you mentioned and some stainless clamps. The weir sticks straight out about a foot. There is no way to disguise it and make a water fall look decent. Think this will work? Thanks so much for taking the time to help me.
Here are a few more pix to show what I'm working with.
![](http://i78.photobucket.com/albums/j90/pondpix/liner2.jpg)
![](http://i78.photobucket.com/albums/j90/pondpix/liner4.jpg)
This shows how the weir looked when attached. It stuck staight out. Ulgy!!