Decided to set up a rack a home to house all my shrimp tanks in one place. Found this kit at chain hardware shop. 150kgs per shelf, extra wide, and in black (the shelf has to be black) ... Perfect, right?     WRONG!!!! It may hold 150 kg per shelf, but not without a massive bend in the frame - meaning none of the tanks sit level. Not only that, the whole frame shakes whenever someone walks near it. What's wrong with this picture? Notice the difference in the size of the gap between th