what size hardware cloth for food hoppers?

[euphuistical]

right now, i'm just using bottles. plastic bottles, at that. so not the best. they're mounted with all-metal bottle holders. i have 1 all-glass/metal bottle that i will be installing as soon as i find a matching one. here are the holders, and the bottle:

http://s3.amazonaws.com/tc-photos/11...ard/505221.jpg

Bottle

the 1st all-glass bottle was given to me with the rats, and i haven't been able to find another close by, so it looks like i'm gonna have to order it online pretty soon. i will post pictures of my set-up pretty quick here.

Those and glass bottles are what I use now (one for each breeder set up plus two for my grow up tub) and I've had no problems with them. I am thinking of expanding my operation soon though and will probably go with some sort of gravity feed system for that.

I got a friend that may even build some racks for me if I am lucky, I just need to decide how many females I want producing. At the moment 7 doesn't seem like enough, but I am not sure, I may just go up to 10 or 12.