My tank is brand new and I redid my rock work on Sunday. That meant taking out the rocks, draining the water, removing sand then putting it back in correctly. Since then I noticed two different things in my filter pad. One is a small brown thing, several of them. They look like a baby roach without antennas, I have no roaches luckily, and they seem dead or not living. The other is a white hollow tube, which are also on one of my live rocks. The white tubes do not seem to move in the tank. I removed this stuff after I took the picture. Should I be concerned? I am pre-cycling from what I can tell, but I am a noob.
On Rock:
On Rock: