Good evening lady and gentlemen Alittle back ground. I’ve moved to new house and kept some of my drift wood in the pond before setting up my new tank st the new house. No I’ve set up my tank 5 weeks back with clean tap water and did a 50% WC 2 weeks back I’ve got one fish and 4 shrimp in at the moment and never feed him except throwing a few misquote in every second day to give him something to chew on. It’s a 500liter tank. Temp is 22 degrees. Since yesterday I’ve noticed small white worms on the glass and small white dots that swims in a radical motion almost like blood worms. Last week for the first time in my life I’ve noticed bloodworms in my sump filter. What can it be? Don’t think it’s planaria as they are to small they about 3mm long and hair size diameters. So I assume it’s is Detritus coming from the pond. But what is the white dots swimming around? To small to take photo. Has anybody ever had blood worms in there tank before? Breeding on the own without throwing live stock in? Can the white swimming things be baby bloodworms?