We have a private water supply filtered from hill stream water through sand then carbon which got changed recently after ?years.
I kept some bags of it - it looks like black sand/grit.
Do you think it could be of use either in the soil or potting mixes?
Perhaps it would be harmful?
Any suggestions?
I kept some bags of it - it looks like black sand/grit.
Do you think it could be of use either in the soil or potting mixes?
Perhaps it would be harmful?
Any suggestions?
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