Hi Bassman,
I was wondering how are you going to support the floor joists from bellow.
I'm assuming (from looking at the first picture) that the FJ run from the window towards the tank (parallel to the tank). And why did you cut into a wall in a first place ? You know this tank will put about 3000 lb in a 12 sq. feet.
I'm also getting new tank (340 gal) soon.
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Denis
150g SPS reef;3x250WHQI,Tunze Streams,Wavebox,Neptune Apex,fishroom in basement  ,reefing since 93,SPS since 99.
TOTM June 2010
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