Also they really won’t over populate. They can crowd easily without affecting parameters. They are pretty close to 0 bioload especially in combo with some other fish.
Give them away or sell them if you have too much. Nothing to worry in a situation where they are continually breeding, it’s when they don’t or dying is when you should be concerned.
I’m worried the tank will become overpopulated with the rate they’re growing (even if they were to stop now I’m sure I’d have to many at this point) and wondered if they’d realise room is getting small and stop on their own or if I’ll have to sort it myself at some point?
Sedgewix 
Also they really won’t over populate. They can crowd easily without affecting parameters. They are pretty close to 0 bioload especially in combo with some other fish.
Give them away or sell them if you have too much. Nothing to worry in a situation where they are continually breeding, it’s when they don’t or dying is when you should be concerned.
I’m worried the tank will become overpopulated with the rate they’re growing (even if they were to stop now I’m sure I’d have to many at this point) and wondered if they’d realise room is getting small and stop on their own or if I’ll have to sort it myself at some point?
Cheers!
*photo just for attention