I wanted to run this idea by you guys:
Switching to sump. I wanna try and ditch HOB filter and go with a sump for a multitude of reasons. However I have 0 idea how sumps work and how I'd set one up. How exactly would I do this? I already have an idea of a Fiji 20 gallon sump. Just make it simple. Im tired of HOB because I seem to not be getting good results etc. As I've matured I've realized that hob was a shortcut as a kid. I wanna keep the Remora though, no point in buying an in sump skimmer.
You're going to need an overflow. You can DIY or buy an external overflow easier than drilling your tank. Buying or building an acrylic one will look cleaner.
That's the first step. Calculate the flow you want through the sump and then match the overflow to that - example: if you get the one that comes with a filter roller it's 1600 gph max. Get an overflow that can handle 1200-1500 gph to maximize the roller or go closer to 1000 to save on the roller mat.
Next, get a return pump to match that flow. If the overflow is 1000 gph, go with a 1200-1500 gph return pump and either reduce the flow on a DC model or bypass some flow with a Tee and a valve and put it back to the sump (we can discuss further later if you want).
After that, plumb it up and get ready to go!
Figure out what you want in the sump (socks, roller mat, biomedia, refugium...). You don't need a separate skimmer section if you're going to continue running the Remora so a 3 chamber works or a four chamber if you want a refugium and biomedia.