I moved into a house with this little pond. It's adorable but it was obviously put in incorrectly. The liner tub shows. The ugly black liner is holding water but again it shows. The cords show. And I have been told it would be a major undertaking to fix it. So after doing research I have decided to glue rocks to the liner. I am planning a chicken wire box with rocks glued to it to hide the filter. I think I've considered my project to a tee but for one thing. What do I use for glue? I have read to use silicone, but in my indoor tanks silicone seems to wear off quickly and takes forever to cure. Any suggestions?