Wanted to replace the dark plastic brace on my Juwel Rio aquarium as it was casting a shadow down the middle of my planted which off course was not very pleasant. My actual project: Materials used: 6mm thick piece of acrylic, set of 6mm nylon screws and Gorilla Glue to be safer. Emptied about 70% of aquarium water and cut off old brace, leaving about 3,5cm of original to hold the new acrylic brace, there was no bowing of glass what so ever, middle hole is existing: Drilled holes on acrylic, used a 6mm metal drill bit: Holes in more detail: Using the same 6mm drill bit, drilled holes into piece of existing brace: Checking position of holes before applying glue and testing screws: Applied glue to piece of old brace and fixed new acrylic brace into place, the cut off the screws to measure: The finished product: Noticed straight way the difference when I turned on the lights, the middle of the aquarium was in the shade. Hope this encourages other people to do the same thing. You won't regret it All products were purchased on ebay.