Yellow labs and rusties spawning

I have had my tank up and running for 6 months, seems like I have it right.. Here is a picture of a breeder box with over 75 yellow labs and rusties.

Trying to figure out my next step. I only have one tank. Seems like I need a grow out tank or something, but don't have room...

By the way the yellows labs are holding again! These are 3 weeks old.

Once you get Yellow Labs started, they will never stop. Seriously. They will breed you out of house and home. I would stop keeping the fry. They will overrun you very fast.

mike you want to sell any of those yellow labs?