Hey mate congratulations on the pair your purchased i'm very envious of you

Personaly i would't have a 6x2x2 split for breeding i would rather have 2 foot tanks for each pairs.I'd leave the 6x2x2 for the growout tank you will be able to get rapid growth with large volume of water,so long as you keep up the water changes.

But i'm guessing you may also want to keep some of the fry for yourself you grow up so maybe a 4x2x2 tank to keep some of your own stock.I'm in the process of expanding tanks(not looking forward to the power bill).So at the moment i only have the one breeding pair in a 2 foot tank.I then had another 2 foot tank to remove the fry into this tank so the fry can still find the food easy doing 100% water change a day 50% in mid afternoon and 50% before i go to bed.I have a 5 footer tank that the fry will go into maybe around 5-6 weeks to grow up and i also have a 4x2x2 which im growing some juvies i got a few months back.Plus community tank inside the house