As always, your tank shots are magnificant - and your tank continues to amaze, very nice!
Sorry I missed your earlier comment to my question about what to change if anything. Funny you should mention your overflow as I have the same 700 kit as yours with the single large diameter pipe. Wonder if angling it a bit would make any difference in noise?
For someone who has never done lion's before your collection of them is quite the feat. I've only had a single volitans many years ago, fed him feeder goldfish as that was the common choice back then, I do remember him having an interesting personality and was quite beautiful when fully extending his fins.
Thanks for continuing to share with us this most inspirational tank!
Mark