Originally Posted by somewhatshocked
Can you describe the worms? Or, better yet, post photographs?
Nematodes and such are common in nearly every freshwater aquarium environment. Red Worms/Blood Worms often pop up on a regular basis, as well. Neither are harmful for your tank and are a good sign of aquarium health, in my opinion and in my experience.
If you keep shrimp, Planaria are a kind of flat worm you absolutely don't want in your tank, though.
The majority of the worms are a few millimeters long and lay on the glass or drift through the water. I've read that they could be planaria or nematodes.
I've seen one worm that was almost a centimeter long, it appeared to have segments and tiny spiky hairs along each side protruding from each segment.
There was another worm, very thin and white, 2/3 of a centimeter long thrashing violently on the glass bottom of the tank after I removed some sand. It appeared unable to get around.
Today there was a worm above the waterline! '
It was heading upwards. It was the longest I've seen yet, a bit over a centimeter long. Transparent white with tapered ends. It was squiggle shaped against the glass. This one disturbed me most of all.
In the soil substrate tank there appear to be brownish colored worms with tapered ends that mostly hang around in a curved shape within the substrate. There are also the very very tiny white worms drifting around in there and on the glass.
I was thinking about getting shrimp eventually but am still undecided.