CWO4GUNNER
USN/USCG 1974-2004 Weps
Strange. If the window section is an integrated part of a stand along tank, then any expansion changes should be minimal and at the same rate just like on a stand alone glass aquarium tank. However if the tank structure is part of another independent structure (i.e house) yet dependent upon that separate structure having completely different size and structure characteristics, then the rate of expansion will be substantially different between the tank and house affected by not only size and wight but heat, cold and seismic activity, and my be a contributing factor for the repeated leaking. Just like two-halves of a prefab home that require a soffit to hide the crack between the two separate structure that will always noticeably spread and shrink due to their own separate characteristics. This is why you never hear of issues with stand alone built in tanks that are only adjacent to the wall but not structurally part of the wall.
I believe something is structurally spreading somewhere in that tank at different and opposing rates (like a glass panel on an aquarium detaching under water pressure), most likely at the house wall viewing panel attachment where things are expanding at different rates IMHO.
I believe something is structurally spreading somewhere in that tank at different and opposing rates (like a glass panel on an aquarium detaching under water pressure), most likely at the house wall viewing panel attachment where things are expanding at different rates IMHO.