So from what I have read and can tell spaghetti worms are good for your tank. Are they really common or am I just lucky? Do a lot of us have them? I have atleast 4 in my sand bed and about 4 in my rockwork. Personally I think itís a lot for my 33g but they came in the rockwork. Just out of curiosity what are these things worth, if they arenít pests that is