For what it's worth, I have the 12gal and 6 gal versions of your tank. The only change I made was to add a Hagen CO2 generator to the 12 gal. The plants had a major growth explosion and I've since had to take nearly a third of them out!
I turned the pump flow to the minimum--the 6 gal still seems to have too strong a current, but it helped. Added heaters to both. Added a single bulb LED blue light to the 12 gal [it's the old version that doesn't have them built in like my 6 gal does].
There's pix of my 6gal up on this Nano forum....
What are you planning for your 24?