Quote:
	
	
		| 
					Originally Posted by Fishy!  Thanks MykaThis will definitely take a pad of paper and some time to figure out. The frag tank also throws another level of complexity to the equations. Any idea where a guy can find a chart with standard tank dimensions?
 | 
	
 I added some more calculations above...the paint is still not dry...  
 http://www.aquariumdimensions.com/
http://www.aquariumdimensions.com/
If you want a standard tank for a sump you'll have to go with a 36" tank, and your options are 36 x 12 x 12" (20 long), 36 x 12 x 16" (called 29 or 30 gallon), 36 x 18 x 16" (40 gallon breeder), 36 x 18 x 18" (50 gallon, not usually easy to find), 36 x 18 x 21" (65 gallon).
36 x 18 x 18" (50 gallon) filled to 17" total volume is 46 gallons.  Operating volume would be 24 gallons, plus 16 gallons is 40 gallons.  6 gallons spare.  That would probably do the trick.  I wouldn't want a sump deeper than 18" since it's too hard to reach into it.  I think that's the only one that has the volume for you.