I checked today. Seems if we go with the 46g bowfront, we will be limited to a sump around the size of Aqueon's Proflex model 1 Sump, which holds just over 11 gallons in the refugium configuration. It'd bring the total capacity of the system to just over 57g. That having been said, I presume that suggested tank size for certain fish has to do more with swimming space. As such, I should limit myself to livestock that are good for 40 gallon tanks or smaller, rather than say 55g?
Also, I realise it may be personal preference, but with a 46g tank and an 11.7g sump, what filtration option am I best to go with? Refugium? Wet/Dry? Berlin?