Quote:
Originally Posted by sirdoofus
I am using silica pool filter sand ...
the pool filter sand seems like a reasonable substitute as its fairly course ..
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Sand grain size can be confusing
The difference between pool filter sand and horticultural sand is similar to the difference between a baseball and a basketball.
There is much more space in between a group of basketballs versus a group of baseballs.
The larger the grain of sand the the higher the soil aeration.