The tank has more fish in then just the parents, and with out the parents protecting them the Hoplos would just eat them, and unfortunately I don't have another tank to move them into to grow out in.
After this weekend there is only about two dozen left now.
If I have managed to stop my GT's growing ant larger then 7ish cm then I am onto something, start selling dwarf GT's.
Serious note, I heard that starting breeding early slowed down there growth, and maybe decreased their maximum size by a little bit due to the energy they use to breed, but I havnt heard of it stopping them growing any further.