Iv'e got a N. sanguinea sitting in a tray to collect runnoff. But I watered it today and as the water pooled in the tray i noticed tiny chunks of dirt in the water movin arround. and as i looked closer i saw tiny barely visible white lookin worms. the longest were like, not even a centimeter. Hair thin maybe thinner. they scooch arround but not really inch or make s shapes they just kinda scooch. My first guess was nematodes which can cause root damage. has anyone seen anything like this and how do i treat it?