I have the same with mines: 3 double gang sockets beside an external heater & filter. I also have a spur from the filter output with a valve & hose pipe connector for easy water changes just dangling in there and will soon add a co2 diffuser. All in all, i have 10 points where the hoses are cut and join to something, many held water tight by a bit of pfte and zip ties.
A simple 2mm clear acrylic cover is being built though, but i have the whole lot sitting on an RCD ready to trip in the event my cat takes a piss on them again! That would be an amazing feat though.