1 for each gallon. I like seeing them crawling all over my glass, plants, driftwood, soil. It's a peace of mind to know they are constantly working in a large crew. =)
Btw are we talking about normal Nirite or Horned Nirite (cause they're 4 times smaller than the normal one)
Last edited by CookieM; 03-10-2013 at 04:20 AM.