Bob,

I use that method for flatworms, using a micron bag, but not cyano bacteria.
Whatever comes out goes down the drain.

Marc


Bob Phelps wrote:

I've got the same problem for the last 10 days or so.
I also siphon mine off by taking a rubber hose and
doubling up a nylon stocking as a filter on one end
and put that into my sump. It does come back and
maybe it's because some is getting though the nylon???


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