
Originally Posted by
Gary Slusser
Yes my typo of 18 gpm above should have been 16 gpm (8gpm/cuft * 2cuft =16gpm; I was thinking of the constant SFR of a 2.5cuft, 18 gpm) for his 2.0 cuft. So you are still wrong.
The reason you are wrong is due to going from a 9" diameter tank for a 1.0 cuft to a 10" diameter tank for a 1.5 cuft to a 12" diameter tank for a 2.0 cuft etc. etc. you are spreading the column out without adding much depth to the column. It is the depth of the column that counts for constant SFR Bob, not the width. You can check that out with any resin manufacturer.
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