[dzeadow]

Have you ever thought about how much weight your bearing walls hold w/ the same kind of faming? Looks fine to me, the only thing may be to do some mini-walls between the two where your tank will cross. Also, do you have any idea how thick the slab is there? I'm sure it's probably 4" which should be plenty, but you may want to check. Is this in a basement or just a slab foundation? most slabs are thickened where there are bearing walls to support the extra weight,. I'm just not sure if it's needed in this case, might want some more insight than just me though.