<a href=showthread.php?s=&postid=7424828#post7424828 target=_blank>Originally posted</a> by bklinefelter
I know of a guy that goes out on his boat about 7 miles and pumps about 110 gals. in to drums for water changes on his 300+ gal. tank w/ no problems. I think the trick is to get it from an area where there is a lot of water movement. That way there shouldn't be too many contaminants.