Something you might want to look at is an article you can find if you paste the following into google: "sea shells used to clean up heavy metals"
I don't know whether adding a layer of crushed sea shells would be effective in improving biosand filters to remove heavy metals, but it's something to investigate.
I'm going to post this comment in a few places to help seed this idea, because I haven't seen anything being done with this.
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Something you might want to look at is an article you can find if you paste the following into google: "sea shells used to clean up heavy metals"
I don't know whether adding a layer of crushed sea shells would be effective in improving biosand filters to remove heavy metals, but it's something to investigate.
I'm going to post this comment in a few places to help seed this idea, because I haven't seen anything being done with this.
doodadica 1 year ago
can i piss in it and than drink it ???????
CapitanoGUC 2 years ago
oh goodness I'm in the video. lol
GlobalizeThis 3 years ago