I posted before and everyone thought that a 150g would be too much for a main level floor, but what about a 100g? It's a 60x18 footprint with a wood cabinet so the pressure would be spread out evenly. House was built in 1986 so I can't say how well it was built and the basement underneath it is finished so I can't see the truss configuration. I've had a 55 gallon and a 30 gallon under that for 2 years and I haven't seen any ill effects, so would I probably be safe with a 100g since it has a bigger footprint?