I have a spare 10G and it's killing me, so I was thinking of getting it up and running and making it a shrimp tank (probably cherry). I figure it'd be a good source of part time cleaners and free fish food for my other tanks... the tank will also serve as a hospital tank should I ever need one. Any suggestions on number to start with? Will they multiply / replenish? I plan on planting it with clippings from other tanks... what other requirements to keep it in good condition? I don't have the filter, lighting, etc. yet. Just looking for thoughts before I start it up...