Hello everyone. I am fairly new to freshwater fish, and over the last several days I noticed some changes in my tank that caused some concern. I purchased some of the freshwater plant seeds from TopFin and put them in my tank last Friday. Today (one week later), I was in the process of doing a water change and noticed my water appear to be a yellowish color. I also noticed there are hundreds of small worms wriggling about the water in the bucket and appear to be finding safe harbor in the gravel. Can anyone point me in the right direction on how to deal with these? I did attach a picture for you to view.