i plan on getting an O. Mercatoris and i've read there knockternal. i was told that if you use red lighting they will come out and i have only seen pictures of them as pets with red light. the sites that i am ordering my stuff from all have blue lights but not red ones. will blue lights work just as well or will i have to find other websites? also (these is kind of unrelated) i can't seem find a site that sells livestock as food (in my case ghost shrimp and fiddler crabs). is their a site you know of that sells them.