| you can figure out the flow you have if you go to RC on the homepage there is a head loss calculator on the home page on the left side of the page about midway down
(note I am not trying to promote another site I just remember seeing it when i was browsing around)
HTH Shaun
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47g column 20x18x30 sps dominated mixed reef 250w HQI 14k approx. 1500gph flow(love you jake 9-03 to 12-03)
Shaun
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