do the setup has to look dining-room-capable or is the look unrelevant ?
If the latter is fact here is how I'm doing it with all of my tanks.
All covers consist of simple styrofoam, which is quite sturdy if you take the 5 cm/~2 inches thick ones (here in Germany the biggest ones in the stores are 100 cm * 50 cm/~40 inches * ~20 inches and 5 cm/~2 inches thick). If those pieces are too small you can attach them together with cable fixers. These covers have openings in the middle for the lighting (covered with thin acrylic glas with the lighting and ballasts on top which weigh the glass down so no fish could push it up) and two openings for feeding and maintanance (big enough to stick my arm through (> maintanance can be done with cover & lighting), covered with fitting pieces of styrofoam and weighed down too to prevent escape).
For wiring and filter tubes I simply cut out what needed to be cut, all openings got stuffed with simple fine filter floss (which can be stuffed quite hard if the cover lets it). I had no single escape with that in ~ 20 years
Big advantage of the styrofoam imho is it's relative softness. If big fish would jump against it the chances of injuries in reduced compared the plastic, let alone glass.
Big advantage of filter floss is that you can close every tiniest hole while letting that tank breathe to the room environment in which the tank stands
If look is important you can just go with wheighing down all light parts of the cover and stuff every tiniest hole with filter floss
PS: 75g and ornate bichir for life is a no-go imho. I had a ornate and it was ~60 cm/~24 inches and the 95g it inhabited temporarely with a large footprint was too small (at night those fish tend to cruise around in the upper water levels).
greets
Peter
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