As far as sources there are many, but for most you will have to buy
50-1000 pounds at a minimum. Then again at a market rate of $.30-$.60
per pound that's not so bad.
Most sources also will require business accounts. Brokers like General
Polymers/Ashland (https://ccenter.ashland.com) or GE Polymerland
(http://www.gepolymerland.com) may be better able to handle consumer orders.


RichToyBox wrote:
All of the bead filters, converted sand filters, use polyethylene beads.
The specific gravity is just less than 1.00 and as such they float and the
water flowing up through them is filtered nicely. Being near the same
specific gravity as water, they are easily backwashed, with the tumbling
action getting all of the material filtered sent to waste. Someone on here
was looking for a source several months ago.