I have a ~6g planted tank that I've had set up for a few weeks that's already cycled (0ppm ammonia, 0ppm nitrites, 5ppm nitrates). I'm waiting for my order of red cherry shrimp to come in so nothing is in there besides a pond snail and it's spawn. I have an algae problem and a lot of snail poop, as well as small white worms and one hydra I've found so far. I don't have pictures of the hydra because I accidentally smashed it against the side of the tank before I could take a picture, but I have studied hydra and can identify it with certainty. I usually leave the light on for about 10 hours each day, which probably contributed to my algae problem. The reason for doing so is because I have java moss in the tank which isn't doing so well and mostly looks brownish, so I thought more light would fix the issue. Apparently it didn't. I've also noticed that there's a white substance in my sand substrate that looks fuzzy and reappears each time I stir up the substrate. Can anyone help identify it? You can also see how well my java moss is doing in the picture. What can I do to get rid of the worms, hydra, white stuff and algae? This is my first tank ever and I'm worried!