They came from outerspace
Hey guys --
I have had my planted tank for approximately 9 months. Today when I did my Filter cleaning and water change, I found worms in the bottom the canister. I have not seen worms in the tank. Nor have they been in the filter before. I have not added anything to the tank in a while and the only thing I have changed about my routine is I am now dosing potassium and phosphorus. Any one know where they could have come from? And will they cause a problem if there are more I did not see?