Managed to fix up the cabinet doors just before CNY.
A hooded aquarium prevents light spill and glare into the room, it also slightly reduce the noise from fans and water flow.
The downside of a hood is heat. The enclosed space prevents the lights from cooling properly. For the longetivity of the lightsets, I decided to vent the cabinet doors. Although this takes away the seamless look, I can be assured that the leds won't degrade before their time. A trio of dc fans actively push the hot air out.
If I were to start from scratch, I would opt for a chimney style convection vent at the back of the cabinet, that would offer good ventilation without disrupting the facade.