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I have heard of ponds being filtered that way using a basket of pebbles. I suppose that there are some advantages of using plastic instead of rocks for this -
by SideburnsOfDoom 1y ago
I have heard of ponds being filtered that way using a basket of pebbles.
I suppose that there are some advantages of using plastic instead of rocks for this - for one thing it's lighter in bulk.
But well, here is the disadvantage. A spill of small rocks isn't usually an environmental issue.
- georgefrowny 1y agoApparently that they float is important to the process. I guess so they don't need to dig them out with an excavator or some mechanism and can just float them out to be changed.