He's a short finned betta so he swims much "betta" than you'd expect
Bruce (old CT betta) had X10 turnover on his 120ltr so Miles should be right with the same... It just mean finding (or if Jeff has his way, making) a tiny biddy canister... Worst comes to worst he can just make a PVC one like the 120 had.
We try... Key word there being "try" lol