How badly is it broken?? I used weldon 4 before to repair acrylic and honestly you can't tell it was broken at some point.Along with the tank I was also given a skimmer which I just finally got in the sump. It’s older with an ac pump and part of the lid is broken, but it’s not everyday you’re given a free Bubble King skimmer.
I just turned it on before taking the picture so it isn’t adjusted and even if it was there is nothing for it to skim anyway. I just wanted to see if it would work.