Crayfish hunt at night and all fish, regardless of where they swim, sleep on the bottom of the tank. The Crayfish will eventually catch and eat everything in the tank.
vanillia, i went to your member page and hit, "email member". Not sure why you didn't get it. I wrote you a visitor message on your page. Im not allowed to send pms, and im kinda weird about putting my email/contact info on a public fourm... How can i get a hold of you? Would like 5 L400s shipped.