So Jonny McC
Your balls are big enough, it looks great, i see you have the same set up as me, you are using a Deltec MC500 skimmer, i also noticed that you have removed the flap from the original hood, it really tidy's up the rear section of the tank.
did the top rim come off easy, i found that getting it started was the hard part, that's when you need big kahuna's , after that it was a breeze.
well done with the mod it looks great, BTW welcome to the forum, you will have a great time on here.
speak soon
Big Pete