I have had zero, ze-ro, luck in finding plans for a corner stand. Doesn't even have to be rounded to mimic the bowfront - big triangle is fine.
Question I have since I'm not an engineer - If I made the stand bigger to accommodate a larger sump and more room below, the bottom rim/brace of the tank will not be directly over the load bearing sections. In doing this, I'd likely have to put a top layer on the stand with cut-out for the bulkheads for drain and return. Would a few joists support 1000lbs? IE rather than the stand not taking the weight I'd be more concerned about the tank falling through the stand if there isn't enough support.
Question I have since I'm not an engineer - If I made the stand bigger to accommodate a larger sump and more room below, the bottom rim/brace of the tank will not be directly over the load bearing sections. In doing this, I'd likely have to put a top layer on the stand with cut-out for the bulkheads for drain and return. Would a few joists support 1000lbs? IE rather than the stand not taking the weight I'd be more concerned about the tank falling through the stand if there isn't enough support.