Hi, I am currently 2 weeks into a fishless cycle of a planted tank. I have a lot of worms in the tank which must have come in on the plants. They started off as tiny white worms but as they have grown they have tuned red. They mostly stay in the substrate, wood/rock and occasionally get caught in the water flow and wriggle in the water. Today I noticed a couple of flies floating, which I assume are linked. I have uploaded photos - does anybody know what type of worms these are? Do they need attention before fish are added at the end of the cycle?