I’d add a heater controller and someway to manage all the pumps. I haven’t used it, but BRS has an skimmer made by reef glass that runs off an airstone. It’s very small, looks good, supposedly effective up to 30g (reviews say it worked in larger tanks up to 40) and drains into an external container. You could run 2-3 of them off one airpump in the cabinet, and drain it into a container on the cabinet. It would look clean, be quieter and seemed like an interesting option for a AIO to me. This one is silent except for the airpump, which you can hide/change easily. Also, one less tank pump to manage!
I assume you have testing equipment? I like Hanna/salifert and hydrometer. Those have been my biggest help.
Other helpers: ro/di with tds meter.
the one thing I wish I had was a qt setup. I didn’t do one fish and now my tank has illness, and I lost 3-4 fish.
looks like a cool footprint, if I ever get another I’d probably do something like that either as all softies or bare bottom sps.
