[Koresample]

Thanks to all for the help with the pest identification...I went to J&L and got the Salifert Flatworm exit and some carbon. I siphoned as many as i could firstly (use a turkey baster to blast all the nooks and crannies as well). I put in the recommended dose plus an extra drop or so, waited about 45 minutes and they started dropping like flies. I siphoned out as many of the dead ones, did a water change and then added the carbon to the overflow. I waited a couple of days and noticed that there were still about 20% of them left, so i did the same thing (same dose) but no water change this time. That was yesterday and today there are still about 50% of the remaining ones left.

Do I just keep repeating this every couple of days or do I need to take another step of some kind?