RSM S650 internal dimensions?

[Joseph Olson]

I'm trying to plan my eventual aquascape for a S650. I need to know how big my rocks can be. I can't find the internal dimensions, factoring in the back wall partition. Anybody know? I'm wondering if 20"+ shelf rock from BRS is too large. I'm planning a mix of large Pukani structures with some Tonga shelf bridges. Any idea how many pounds of each sounds right? Thank'ums

 

[nanoreefing4fun]

sure someone can advise...

or @RedSeaKev kev can

being that rock is nice and porous - in general - I would say around 1 pound per gallon sounds about right

see what others think...