I've got Chaeto in all my tanks, all of it is grown from the same original handful. I have a clump in my 1 gallon bowl, and one startand for some reason developed small red sections. The rest is growing normally. I thought maybe the red spots on this strand had were the result of damage, but it is continuing to grow in alternating red and green sections. I've been letting it grow out of curiosity, but am not sure if it's something I should be concerned about. Near as I can tell it's not something growing on the Chaeto turning it red in those places. Any ideas? I wondered if it was getting ready to release spores, but it just seems to keep growing instead. If my digicam will cooperate later on I'll try to post a pic of it.