I just did a water change. I poured the water from the bucket into the tank and the water ame pretty forcefully and fast. I slowed it and calmed as much as possible. However, whenever I do water changes, right after the water is pured in, there is TONS AND TONS of crap floating around in the water. I dont know if its rotting food or rotting feces or both. I think it is stuck in the plants, and then when the water is poured in, it swishes everything around and the stuff is knocked out from the fake plants. How do i stop that? Just feed them less?