Didn't go too well. It drains too slowly after the first time through. Not only that, it doesn't remove all of the soap suds. The water isn't clear, either. Have to experience problems the first time through, it was said, so this isn't a big disappointment.
Note: I'm not trying to obtain potable water here. Just trying to get a significant filtration accomplished with ordinary materials that can be easily obtained.
The actual experiment in progress.
Update:
Analysis of filter
The charcoal got soggy---that's worth remembering. Probably used too much because I wanted to capture the soapy residues. Not enough rocks and sand, most likely.
Made an extra hole in the cap, but that didn't improve water flow. Was there too much cotton? The water didn't drain fast enough.
The results were a darkish clear yellow water that had much reduced sudsy quality, but not completely eliminated. Somewhat disappointing.
Afterwards, I took the wet dirt and made a little planter for the mesquite bean seeds that I have. Maybe they will sprout and grow.
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