Planted Tank Guru
Join Date: Jun 2004
Location: Baton Rouge, LA
Hi Mty, welcome to the forum!
I've been able to fully control it by immediately culling all neons that show symptoms. If they're allowed to die in the tank, and the corpse is even partially eaten by other neons before it's discovered, the disease will spread - so now I eliminate that possibility.
That's just my experience though, I'm by no means an expert on NTD.