WELL. After browsing this forum for a few minutes I realize that the new 6 Tub rack system I am building for ASF rats with 1/2" Wire mesh will not work. I'm already 2 days and $100 in. I'm not re-doing re-investing anything into this so I will just increase my colony of Regular rats I guess. I dislike breeding regular rats because of the need to remove the male from the tub. Once I get into 8 breeder tubs and only 2 male growout tubs I am definitely going to forget which male goes where. LOL. The tips I want for regular rats, is Does a 1:4 Ratio work well with them, or would 1:3 be the max? When do you guys remove your males? I hear a lot of people say to remove the the day or two before the first female gives birth, but I would really like consistent births from my females (every 3 weeks). This would involve leaving the male in the tub while the females give birth. I do not like this idea Too much because I do not want the males eating the litter while I'm at work etc. Any tips with this? Also will my females be able to survive producing litters every 3 weeks? If this is not a healthy idea, When do I put my male back in? After 2 weeks (when the male Shouldn't eat the litter anymore)?