Will the straws clog? Does water flow through them? Are they just surface?

J

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"comcast news" wrote in message
...
I built a filter out of 25,000 7.75"x0.125" straws about a month ago and
the water cleared a whole lot over the past few days. I'm not sure if
this has anything to do with it but I also added a bunch of iron,
potash, and epsom salts about a week before it cleared (much more than
anyone here ever suggests).