I just put silcone round all sides in the first video, noting special. Take no notice of how thing are set up here, it was just a quick fix so I could get out working Moved tank forward, Bigger stronger wood for the border (there no screws in this video. I never had the tool to put them in, there in now though! ) There alos those L shaped brackets on the outside. I put 2 builders straps through the middle. Im going to get more of them tomorow and put the on the lef/right hand sides too. Just to be safe. What I used: (so far) 4 posts of wood (ill get dimensions tomorrow) Box of screws L shaped brackets Silicone 2 builders straps Roof paint (not sure if this was good idea yet! ) Paint brushes / rollers.