Nice tank.
You might consider placing some rock terracing to hide the overflow box. As far as asexual issues, try to make sure to keep 5ppm or so of NO3, dose KNO3, or Ca(NO3)2.
Caulperas go sexual when you bottom out the NO3 and forget to prune the weeds.
As biomass increases, the uptake and NO3 removal also dramatically increase. CO2 at this rate will not hurt and with this much current from the wave makers, most of it is being lost.
But think about this, adding CO2 will dissolve some of the aragonite and keep the KH/Ca levels up as well.
The issue is when you add too much CO2, then you dissolve snails, the Halimeda etc. I have been exploring using just aeration mist, simple, cost less, less chance or error or killing things.
CO2 alone did not do that much in some 20 gal test tanks.
Lily pipes, good lord, get rid of those
They are dirty and nasty and break very easily(I know from experience). Look nice if you spend the time to keep them clean weekly.
Next time you take a picture, try to fill in that area by the over flow. Try to tidy up the foreground a bit. Remove the powerheads and lily pipes, then take the pictures.
Also, if you can do a 25% water changes earlier that morning, then take the pictures at night, that will be ideal.
This will help and impress more folks.
Looks great so far and much easier than many reefs in some respects, nice fish selection also, I like the choices.
Regards,
Tom Barr