Chaeto Question - with pic

[Beverly]

I have two golf ball sized chunks of chaeto attached with elastics to small rocks in my 67g. They are growing well, even had to split one yesterday.

Anyway, growing on the back of the tank are coralline, dense green algae that my snails eat as well as this new curly light green algae that looks an awful lot like little chaetos.

Can it be possible that this curly stuff is actually chaeto? If so, I don't think I want it on the back glass of my tank